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Journal articles on the topic 'Feed additives for dairy cows'
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1
Radzikowski, Daniel, Anna Milczarek, Alina Janocha, Urszula Ostaszewska, and Grażyna Niedziałek. "Feed additives in the diet of high-producing dairy cows." Acta Scientiarum Polonorum Zootechnica 19, no. 4 (May 20, 2021): 5–16. http://dx.doi.org/10.21005/asp.2020.19.4.01.
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Improvement of the genetic value of cows, enabling increasingly high milk yield, requires increasingly modern feeding. Therefore, in addition to high-quality bulky feed and concentrate feed, specialized feed additives are being introduced to the diet of high-producing dairy cows. The available additives (rumen-protected essential ingredients, phytobiotics, probiotic, prebiotic and others) have a broad spectrum of activity, increasing production efficiency, protecting against metabolic disease, and improving the reproductive parameters and health of the herd. It should be borne in mind, however, that only rational use of feed additives in the diet of cows is conducive to their longevity, which is one of the most important factors improving the economic outcomes of milk production.
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Kostomakhin, N. M., and N. D. Ivanova. "Influence of feed additives on digestibility of nutrients and nitrogen metabolism in Kholmogorskaya breed of cows in Central Yakutia." Kormlenie sel'skohozjajstvennyh zhivotnyh i kormoproizvodstvo (Feeding of agricultural animals and feed production), no. 9 (August 16, 2021): 51–57. http://dx.doi.org/10.33920/sel-05-2109-05.
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The results of research on the use of the feed additive “Ecostimul-2” and natural zeolite from the Khonguruu deposit in the Suntarsky district of the Republic of Sakha (Yakutia) in the rations of lactating cows have been presented in the article. The purpose of the work was to study the influence of feed additives “Ecostimul-2” and zeolite on the digestibility of nutrients and nitrogen metabolism in lactating cows of Kholmogorskaya breed under the conditions of Central Yakutia. Chemical analysis of feed, accounting of dairy productivity of cows has been carried out according to generally accepted methods. The cows of the control group have received the main ration. The cows of the experimental groups have been additionally received to the main ration: the 1st experimental feed additive “Ecostimul-2” in the amount of 200 mg/head/day, and the 2nd experimental group – “Ecostimul-2” in the amount of 200 mg/head/day and zeolite 200 g/head/day. The inclusion in the ration of lactating cows of Kholmogorskaya breed under the conditions of Central Yakutia of feed additives “Ecostimul-2” and zeolite of the Suntarsky deposit together has increased the digestibility of feed in the ration and improved the digestibility of nutrients and nitrogen metabolism. It has been found during the experiment that in cows have been receiving the feed additive “Ecostimul-2” and zeolite with the main ration (the 2nd experimental group) the average daily milk yield was 9,06 kg with a fat content of 3,8 % or was by 10,4 % higher than in the control group. In cows that have been received feed additive “Ecostimul-2” (the 1st experimental group) the average daily milk yield was 8,76 kg with the fat content of 3,77 % or was by 6,8 % more than in the control group.
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Ivanov, A., and A. Betin. "The effectiveness of the use of feed additive Agolin Ruminant in the rations of lactating cows." Glavnyj zootehnik (Head of Animal Breeding), no. 4 (April 1, 2020): 29–35. http://dx.doi.org/10.33920/sel-03-2004-04.
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An important task for livestock farms is the use of plant feed extracts to improve the effectiveness of dairy production. The development of new alternative drugs based on natural plants allows for the biological protection of animals. Agolin Ruminant is multi-functional feed additive is a mixture of high-quality active ingredients of plant origin, which is designed to optimize consumption and improve feed conversion in the dairy industry. The purpose of the work was to find the increase in the productivity of high-yield cows by using feed additives based on plant extracts on a large number of animals. Production tests have been carried out in the dairy complex of LLC “Tambov-milk” in the Tambov region on Holstein cows with actual productivity at the level of 8500–9000 kg of milk per year. Analysis of cow productivity indicates a positive effect of the introduction of the feed additive Agolin Ruminant in the ration of animals. For example, in the control group of cows for 30 days of lactation the average daily milk yield from 1 cow was 27,44 kg, in the experimental group 28,14 kg, which was more than 700 g or 2,55 %. The introduction of the Agolin Ruminant feed additive into the ration of animals in the experimental group had a positive effect on the fat content in milk, which at the end of the research period was 3,69 % in the control group, and 3,71 % in the experimental group or 0,02 abs.% higher. The protein content in milk in the control group of cows was 3,16 %, and in the experimental group 3,18 % the excess was also equal to 0,02 abs.%. Economic calculations indicate the effectiveness and expediency of using the Agolin Ruminant feed additive in feeding highly productive cows. At the sale price of 1 kg of milk for 29,0 rubles the productivity of cows have been increased by 0,7 kg, and the income from 1 head per day has increased by 17,3 rubles minus the cost of feed additive.
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Zyalalov, Sh R., V. S. Dezhatkina, and N. V. Sharonina. "RESEARCH RESULTS OF THE PROCESS OF CLEANING POTATO TUBERS AND CARROT ROOT CROPS USING ULTRASOUND." Vestnik of Ulyanovsk state agricultural academy, no. 2 (50) (June 8, 2020): 201–5. http://dx.doi.org/10.18286/1816-4501-2020-2-201-205.
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The manifestation of mineral deficiency in the body of animals contributes to a decrease in their productivity and the development of diseases such as perversion and loss of appetite, anemia, endemic goiter, rickets, and osteoporosis. One of the ways to solve the problem of mineral insufficiency is the scientific search and development of advanced formula of feed additives based on natural minerals processed by high technologies. The aim of this study is to determine the effectiveness of using modified diatomite as a feed additive for dairy cows. The exeriment was carried out in Ulyanovsk region during 100 days. We formed groups of animals of 50 cows, the 1st group (control) did not receive additives, but only a household diet, in the 2nd group an additive based on modified diatomite was additionally introduced into the diet in a mixture with feed at the rate of 250 g/head/day, . For the physiological experiment, 5 cows were selected by the method of pairs of analogues. It was established that the introduction of additives based on modified diatomite into the diet of cows improves the morphological composition of their blood. Intake of the additive increases milk yield by 24.7% at p<0.05, the amount of milk fat by 16.2 % compared to the control. The effect of afteraction after stopping feeding the additive was revealed. The use of an additive based on a modified mineral is a cost-effective measure that reduces feed costs and gets additional profit. The average daily yield of natural milk increased by 8.2 % for 1 ruble, and a profit of 4.30 rubles was received . There was a decrease in feed costs for the production of 1 kg of natural milk, up to 0.85.
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Abramyan, A. "IMPACT OF FEED AND SUPPLEMENTATION ON COW DAIRY PRODUCTIVITY AND ECONOMIC PERFORMANCE." Adaptive Fodder Production 2021, no. 2 (July 14, 2021): 81–85. http://dx.doi.org/10.33814/afp-2222-5366-2021-2-81-85.
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On the basis of balancing rations of cows taking into account daily yields, additives, quality of volume feed, as well as the cost of rations, the economic efficiency of the complex of feed additives is deter-mined. The observations were carried out in farm in the Tver region, the Agrofirm Dmitrova Gora JSC. The branch, where the research was carried out, includes several sites for milk production and cultivation of young cattle. From lactating cows Holstein breed expect to receive the maximum amount of dairy products, both for lactation, and for the entire life of use. But the expectation should be active, the animal should be properly prepared for the physiologically stressful period of milk formation. Based on the re-sults, it can be stated that the volume feed in the farm, which breeds highly productive Holstein cattle, should be the 1 and 2 class. The additional cost of a complete balance of the diet while increasing the dai-ly yield from 17 kg to 39 kg using a set of feed additives pays off, reducing the total cost of feed in the calculation by 1 kg of milk received and increasing feed payment by 88.1%.
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Zolotarev, Angriy, Igor Sedyuk, and Svetlana Zolotaryova. "PRODUCTIVITY OF MILKING COWS USING NEW FEEDING TECHNOLOGY." Scientific and Technical Bulletin of the Institute of Animal Science NAAS of Ukraine, no. 124 (2020): 79–88. http://dx.doi.org/10.32900/2312-8402-2020-124-79-88.
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The article presents research materials to study the possibility of increasing the milk productivity of high-yielding cows through the use of new technology of their feeding - through the use of protected from cleavage in the rumen protein and starch in the feed additive TEP-mix. The scientific and economic experiment was carried out on dairy cows-analogues of the first half of lactation of the Ukrainian Black-Spotted dairy breed. During the study, the actual chemical composition of feed was determined, feeding rations and compound feed recipes were developed taking into account the content of fissile protein and milk productivity of experimental animals, the actual feed consumption by cows, milk productivity, milk quality, calculated cost-effectiveness of the studied energy supplement. The difference between the rations of the control and experimental groups was the structure and composition of the feed. In the experimental group, part of the concentrated feed was replaced by energy-protein supplement TEP-mix, with a high degree (65 %) of protection against splitting in the rumen, which increased this figure in the diet of cows in general. The use of new feeding methods increased the productivity of cows with natural milk by 2.0 kg compared to the control group, the amount of fat and protein in milk - by 0.20 % and 0.17 %, respectively. As a result, the average daily hopes for the period of the experiment in terms of basic fat in the experimental group was higher by 3.9 kg, which allowed to obtain 349.2 kg more milk per cow in 89 days. In determining the economic efficiency of the use of high-yielding cows in the feeding of additives TEP-mix allowed to obtain an additional average for the period of the experiment up to 32.59 UAH. per 1 cow per day or UAH 0.98. per 1 kg of milk. The use of feed additives with a high content of protein and starch TEP-mix will allow you to balance the feeding rations of cattle more accurately, adjust the diet of high-yielding dairy cattle in the early stages of lactation to obtain maximum productivity while maintaining health and productive longevity.
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Hymøller, Lone, Søren K. Jensen, Hanna Lindqvist, Birgitta Johansson, Mette O. Nielsen, and Elisabet Nadeau. "Supplementing dairy steers and organically managed dairy cows with synthetic vitamin D3 is unnecessary at pasture during exposure to summer sunlight." Journal of Dairy Research 76, no. 3 (May 18, 2009): 372–78. http://dx.doi.org/10.1017/s0022029909004130.
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Use of synthetic feed additives, including synthetic vitamin D3 (D3) in the feed for cows and other ruminants, is not consistent with the international principles of organic farming. If dairy farmers wish to produce in accordance with the organic principles, production animals would be left with only their endogenous production of D3 from summer sunlight as a source of D3. To examine the impact of supplemental synthetic D3 from the feed on the D3 status of dairy cattle in organic production in Nordic countries, 20 high-yielding dairy cows and 30 dairy steers were divided into two groups: one supplemented with synthetic D3 in the feed and one not supplemented with synthetic D3. Vitamin D3 status of the animals was assessed by measuring the concentration of the liver-derived 25-hydroxyvitamin D3 (25OHD3) in plasma. Results showed that 25OHD3 concentration in plasma from dairy cattle as well as from steers decreased during winter for both supplemented and unsupplemented groups. Unsupplemented cows and steers had approximately 2 ng 25OHD3 per ml plasma during winter, whereas supplemented animals had between 10 (cows) and 30 (steers) ng/ml. During summer and autumn there was no additive effect of supplementing with synthetic D3 since unsupplemented and supplemented animals had the same D3 status at this time of year. In all cows summer concentrations of 25OHD3 were 20–25 ng/ml and in all steers 40–50 ng/ml plasma. The decrease in vitamin D3 status during winter indicates that cows and steers are able to store D3 only to a limited extent. The results also show that cows or steers fed supplemental D3 according to Swedish recommendation throughout the year are not able to maintain their summer value of 25OHD3 during winter.
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Nikanova, Daria A., Evgenia Kolodina, Olga Artemyeva, and Yuri Fomichev. "PSIX-13 Influence of an integrated fodder additive on productivity and metabolic homeostasis of dairy cattle in transition period." Journal of Animal Science 98, Supplement_4 (November 3, 2020): 416. http://dx.doi.org/10.1093/jas/skaa278.726.
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Abstract The transition period is the most stressful for dairy cows in terms of metabolic rate and characterized by dynamic changes in the hormonal profile, loss of appetite, negative energy balance, nutrient and vitamin deficiencies, compromised immunity and oxidative stress. The aim of the research was to balance the increase in cows’ productivity and the consumption of nutrients from the feed during the transition period through the use of energy feed additives (EFS), high protein feed concentrate (PFC) in combination with biologically active (BA) substances. Thirty-six dairy cows of black-motley breed were divided into 3 groups: (1) The main diet (G0, n = 12), not supplemented with additives, (2) additive 1 (G1; supplemented with 0.5 kg EFS / cow per day, n = 12), (3) additive 2 (G2; supplemented with 0.5 kg EFS; 0.5 kg PFC and 0.06 kg BA / cow per day, n = 12). The experimental part of the feeding lasted for 20 days before calving and the first 100 days after calving (DPP). Blood samples were collected during the first and the third months after calving. The biochemical analyzer was used to measure blood serum components. The milk yield was recorded monthly throughout lactation. BCS losses from 7 days prior to calving to 28 DPP were -0.29 for Gr2, -0.42 for Gr1 and -0.60 for Gr0. Feeding with additive 2 (Gr2) increased milk yield (p≤0.05) in the first 100 DPPs and (p≤0.001) 305 DPPs compared to G0. The number of samples with SCC ≥ 500 000 / ml. per 100 DPP was 51% in the Gr0 group, 27% in Gr1, 25% in Gr2. Also, microbiological control showed an excess of Bacterial cells in the milk of cows from group G0, which correlates with SCC indicators. Cows from Gr2had a lower content of ketone bodies (P≥0.001) and higher (P≥0.001) antioxidant activity of blood serum compared to Gr0. Cows from Gr2 had an increase in ALT activity by1.4 times (P <0.05) from the first to the third months after calving.
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Kutlu, Hasan Rüştü, and Uğur Serbester. "Ruminant Beslemede Son Gelişmeler." Turkish Journal of Agriculture - Food Science and Technology 2, no. 1 (January 11, 2014): 18. http://dx.doi.org/10.24925/turjaf.v2i1.18-37.37.
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One of the most industrialized animal production branches of ruminant production successfully requires a blending of theoretical knowledge of nutritional principles with practical stockmanship, maintaining health and dealing with numbers. It is well known that high yielding, dairy cows, require balanced diet with adequate nutrients for yielding. This is not provided with only a few feedstuffs. Milk production in dairy cows is related to the improvements in genetic merit of farm animals and also developments in feed science, feed technology and animal nutrition. In particular, feeds and feed technology studies associated with sustainability, economical perspectives and product quality in the last decade have been in advance. In the present work, recent advances in feed sources and feed technology, minerals (macro and trace minerals ), vitamins and amino acids, feed additives (antibiotics alternative growth stimulants, rumen modulator, organic acids, antioxidants, enzymes, plant extracts), nutrition-products (meat-milk-progeny) quality and functional food production (milk, meat) nutrition-reproduction, nutrition-animal health, nutrition-environmental temperature, nutrition-global warming were evaluated.
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Karunskyi, O., G. I. Kotets, and M. M. Madani. "CHEMICAL COMPOSITION AND NUTRITIONAL VALUE OF THE NEW CITRUS POMACE FEED ADDITIVE." Grain Products and Mixed Fodder’s 20, no. 4 (June 16, 2021): 33–37. http://dx.doi.org/10.15673/gpmf.v20i4.2018.
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The materials of the article present data on research on the chemical, mineral-vitamin composition and nutritional value of a new feed additive from citrus pomace. The article presents the results of research on the technological line of granulation of citrus waste, established the optimal composition for granulation of citrus feed additives: sunflower meal - 20%, molasses - 5% and 75% of citrus fruits.Their chemical composition was studied, the gross content of proteins, fats, assimilated carbohydrates, including simple sugars, was determined, and the efficiency of use in the diets of farm animals was determined. The positive influence of citrus waste granulation technology has been established, which allows to obtain high-quality granules. Chemical analysis of citrus granules showed that 100 g contains: protein - 6.15 g, fat - 0.99 g, carbohydrates - 21.8 g, of which simple sugars 14 g, the energy value of this feed additive - Kcal (kJ) - 120.7 (505.7).The possibility of preparation of feed additives in the form of granules is revealed, which allows to avoid selfsorting of components and overdose of microelements and to improve the consumption of feed ingredients. The ability to prepare feed additives in the form of granules avoids self-sorting of components and overdose of micronutrients and improve the consumption of feed ingredients. The results of zootechnical researches, structure and nutritional value of average daily rations with use of citrus pomace are resulted.It was found that the introduction into the diet of dairy cows feed additives from citrus pomace during stable lactation increases the average daily expectations by 1.8 kg or 15.5%, feed costs for milk production containing 4 fat were 0.97-0, 98 feed units. When using a feed additive from citrus pomace, the nutritional value of the diet is improved due to the ratio of sugar - protein (0.62: 1 vs. 0.8: 1.2).
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Ross, Elizabeth G., Carlyn B. Peterson, Angelica V. Carrazco, Samantha J. Werth, Yongjing Zhao, Yuee Pan, Edward J. DePeters, et al. "Effect of SOP “STAR COW” on Enteric Gaseous Emissions and Dairy Cattle Performance." Sustainability 12, no. 24 (December 8, 2020): 10250. http://dx.doi.org/10.3390/su122410250.
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Feed additives have received increasing attention as a viable means to reduce enteric emissions from ruminants, which contribute to total anthropogenic methane (CH4) emissions. The aim of this study was to investigate the efficacy of the commercial feed additive SOP STAR COW (SOP) to reduce enteric emissions from dairy cows and to assess potential impacts on milk production. Twenty cows were blocked by parity and days in milk and randomly assigned to one of two treatment groups (n = 10): supplemented with 8 g/day SOP STAR COW, and an unsupplemented control group. Enteric emissions were measured in individual head chambers over a 12-h period, every 14 days for six weeks. SOP-treated cows over time showed a reduction in CH4 of 20.4% from day 14 to day 42 (p = 0.014), while protein % of the milk was increased (+4.9% from day 0 to day 14 (p = 0.036) and +6.5% from day 0 to day 42 (p = 0.002)). However, kg of milk protein remained similar within the SOP-treated cows over the trial period. The control and SOP-treated cows showed similar results for kg of milk fat and kg of milk protein produced per day. No differences in enteric emissions or milk parameters were detected between the control and SOP-treated cows on respective test days.
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Aristov, Alexander, Lidia Esaulova, Nikolay Zuev, and Natalya Gorbunova. "Efficiency of application in diets of high-productive cows of Actisaf SC 47." BIO Web of Conferences 30 (2021): 02011. http://dx.doi.org/10.1051/bioconf/20213002011.
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The paper discusses the technology of growing, keeping and feeding dairy cows in the conditions of Zolotaya Niva LLC, one of the largest high-tech dairy complex in the Smolensk region, a European type for the production of raw cow milk, which has the status of pedigree producer. The structure of the feed and the quality of mixing are determined by means of the Pennsylvania sorting system, the level of feed on the sieves is in line with the normative. The results of the production experiment on feeding dairy cows with Actisaf Sc 47, which has a probiotic effect, indicate better digestibility of the feed when the additive is introduced, the use of the drug contributes to: reducing ketone bodies in milk, the beneficial effect of improved feeding, by including yeast on the health of animals, improving the health of the udder, manifested in a decrease in somatic cells in milk. The milk yield with the use of the additive is increased, the milk protein is also increased, since its absorption in the rumen is improved. With the use of additives, the appetite and eatability of the feed improves, so in the group before feeding the probiotic, the percentage of feed residue on the feed table is higher than in the experiment. Dry matter intake is 4.32% higher when feeding supplements, while feed conversion is increased. Saving feed costs per 1 kg of milk is 0.97 rubles. Saving feed costs per year for a livestock of 1800 animals will amount to 523,800 rubles.
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Sharvadze, Roini, Elena Gaidukova, Tamara Krasnoshchekova, Ketevan Babukhadiya, and Andrey Burmaga. "Influence of biologically active compounds on milk production and metabolism of lactating cows." E3S Web of Conferences 203 (2020): 01005. http://dx.doi.org/10.1051/e3sconf/202020301005.
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Dairy farming is a strategic and most efficient branch of agriculture. Milk production depends on a number of factors. The practical experience of many scientists has shown that an increase in the milk productivity of cows is possible when the rations are fed in the form of complete feed mixtures (mono feed). Despite the fact that such a feeding technology contributes to an increase in milk productivity of cows, there are problems in the new calving period, related to their health. After calving, during the milking period, the cows lose their live weight, they quickly acquire metabolic disorders (liver steatosis, ketosis, acidosis, etc.). To prevent such pathological processes, it is necessary to feed energy-compensating supplements in the new calving period. One of the solutions of this problems is the inclusion of biologically active compounds in feed mixtures. In our research these are feed additives “Ecostimul-2” and “Active Mix". In the process of experimental studies, the effect of feed additives “Ecostimul-2” and “Active Mix” during their separate and joint feeding to lactating cows in the new calving period on their milk productivity and metabolism was studied. As a result of the experimental studies, it was found that feeding the used additives to cows in the new calving period promotes an increase in milk yield and a faster recovery of reproductive functions.
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Souza, Leiliane Cristine de, Maximiliane Alavarse Zambom, Claudete Regina Alcalde, Tatiane Fernandes, Deise Dalazen Castagnara, Ana Claudia Radis, Sérgio Mangano de Almeida Santos, Ana Paula Possamai, and Michele Pasqualoto. "Feed intake, nutrient digestibility, milk production and composition in dairy cows fed silage of wet brewers grain." Semina: Ciências Agrárias 37, no. 2 (April 26, 2016): 1069. http://dx.doi.org/10.5433/1679-0359.2016v37n2p1069.
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The aim of this study was to evaluate the supply of wet brewers grain silage with and without nutrient additives in ensiling (wheat bran, soybeans hulls and ground corn), and the effect of additives on the intake and digestibility of dry matter and nutrients as well as the efficiency, production and milk composition of Holstein cows. Four multiparous Holstein cows were used, with an average milk production of 25 liters per day. The cows were randomly assigned, via the Latin Square design (4x4), to one of four experimental diets. The experimental period was 21 days. The results obtained in the experiment were evaluated by analysis of variance, Fisher’s F test and Tukey’s test at 5 % probability. The experimental diets consisted of wet brewers grain silage alone, and this silage with the addition of wheat bran, soybean hulls or ground corn. The diets did not affect the initial body weight of the animals. Diets containing wheat bran and ground corn provided a higher intake of dry matter (21.78 and 21.50 kg day-1) and organic matter (20.42 and 20.22 kg day-1) compared to the wet brewers grain silage alone and the diet containing soybean hulls. The results observed for dry matter (636.96 and 632.96 g kg-1), organic matter (659.16 and 654.35 g kg-1 DM), crude protein (712.84 and 717.79 g kg-1 DM) and neutral detergent fiber (598.99 and 538.90 g kg-1 DM) when cows were fed diets containing soybean hulls and ground corn, respectively, were higher than other diets. The different diets did not change daily milk production, milk production corrected for 3.5 % fat or milk composition. The milk urea nitrogen from cows fed ground corn diets was a lower concentration (17.67 mg dL-1), however, it was still above the suitable range (10 to 14 mg dL-1). Providing wet brewers grain silage with soybeans hulls or ground corn to Holstein cows increased the digestibility of dry matter and nutrients. However, the use of silages with wheat bran, soybean hulls or ground corn did not alter the efficiency, production or milk composition of cows fed with these silages.
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Brzozowska, Anna Malgorzata, Piotr Micek, Beata Kuczynska, Marek Lukaszewicz, and Jolanta M. Oprzadek. "The use of energy-protein supplement increases performance of high-yielding dairy cows and improves health-promoting properties of milk." Animal Production Science 58, no. 9 (2018): 1708. http://dx.doi.org/10.1071/an16161.
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Lipid additives are of particular importance in the diet of high-yielding dairy cows. The aim of this study was to determine the effects of a specially designed energy-protein supplement on dairy cows’ performance and milk composition. The experiment was conducted on 24 Polish Holstein-Friesian cows fed total mixed ration. Two kilograms of energy-protein supplement/cow.day were added to the ration for one group of cows whereas the other was fed solely the total mixed ration. The supplement consisted of whole flax seeds, wheat bran, flaxseed and fish oils, and rapeseed cake and its composition is protected by a patent. Feed intake and daily milk yield were recorded automatically for each cow. Gross milk composition and fatty acid profile of milk were determined. An ANOVA was performed to determine the influence of the supplement on performance traits and milk composition. Energy-protein supplement had a positive impact on dry matter intake and milk yield of cows. It had a little effect on the gross milk composition and somatic cell count. The effect of the additive on fatty acids in milk was beneficial, therefore its use in high-yielding dairy cows nutrition is recommended to improve health-promoting properties of milk.
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Brzozowska, Anna Malgorzata, Piotr Micek, Beata Kuczynska, Marek Lukaszewicz, and Jolanta M. Oprzadek. "Corrigendum to: The use of energy-protein supplement increases performance of high-yielding dairy cows and improves health-promoting properties of milk." Animal Production Science 58, no. 9 (2018): 1766. http://dx.doi.org/10.1071/an16161_co.
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Lipid additives are of particular importance in the diet of high-yielding dairy cows. The aim of this study was to determine the effects of a specially designed energy-protein supplement on dairy cows' performance and milk composition. The experiment was conducted on 24 Polish Holstein-Friesian cows fed total mixed ration. Two kilograms of energy-protein supplement/cow.day were added to the ration for one group of cows whereas the other was fed solely the total mixed ration. The supplement consisted of whole flax seeds, wheat bran, flaxseed and fish oils, and rapeseed cake and its composition is protected by a patent. Feed intake and daily milk yield were recorded automatically for each cow. Gross milk composition and fatty acid profile of milk were determined. An ANOVA was performed to determine the influence of the supplement on performance traits and milk composition. Energy-protein supplement had a positive impact on dry matter intake and milk yield of cows. It had a little effect on the gross milk composition and somatic cell count. The effect of the additive on fatty acids in milk was beneficial, therefore its use in high-yielding dairy cows nutrition is recommended to improve health-promoting properties of milk.
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Rugoho, Innocent, Cameron J. P. Gourley, and Murray C. Hannah. "Nutritive characteristics, mineral concentrations and dietary cation–anion difference of feeds used within grazing-based dairy farms in Australia." Animal Production Science 57, no. 5 (2017): 858. http://dx.doi.org/10.1071/an15761.
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Feed types consumed by cows on 44 contrasting dairy farms from all major dairy regions in Australia were identified and sampled on five occasions over a 15-month period to determine nutritive characteristics and mineral concentrations. Perennial ryegrass was the most dominant and commonly used forage, although a broad range of other home-grown forages was also grazed or conserved. Almost all farms utilised cereal or legume grains or grain-based concentrates, as well as a range of by-products and mineral additives. The present study has documented, for the first time, the nutritive characteristics, mineral concentrations and dietary cation–anion difference (DCAD) of the broad variety of feed types used on dairy farms across Australia, and has also highlighted the substantial variation that can occur among and within feed types. While there were effects of season, region and some defined farm-management practices on important nutrients for specific feeds, among-farm variation was generally large. These results suggest that farmers and nutritionists should be mindful when formulating dairy rations using feed nutritive characteristics and mineral concentrations reported in feed databases, as there is a potential for considerable variation in specific feeds. In particular, these defined differences suggest that appropriate feed testing of grazed pasture and conserved forage should be undertaken on at least a seasonal basis to monitor changes in nutritive characteristics and mineral concentrations, so as to optimise dietary formulation for the nutrition of grazing dairy cows.
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Avila, Andre S., Maximiliane A. Zambom, Andressa Faccenda, Caroline H. Werle, Ana R. E. Almeida, Cibele R. Schneider, Dieisson G. Grunevald, and Antonio P. Faciola. "Black Wattle (Acacia mearnsii) Condensed Tannins as Feed Additives to Lactating Dairy Cows." Animals 10, no. 4 (April 11, 2020): 662. http://dx.doi.org/10.3390/ani10040662.
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The objective of this study was to evaluate the effects of five levels of condensed tannins (CT) from black wattle (Acacia mearnsii) in the diets of lactating dairy cows on intake, nutrient digestibility, ruminal microbial protein synthesis, milk production, composition, oxidative profile, and blood metabolites. Five Holstein cows (88 ± 26.8 days in milk) were allocated in a 5 x 5 Latin square design for a period of 20 days (14 days of diet adaptation and six for sampling). Treatments were the inclusion levels of CT at 0, 5, 10, 15 and 20 g/kg of dry matter (DM) in the diet. There was no effect of CT on DM intake. The digestibility of DM and neutral detergent fiber changed quadratically, with the maximum values at 12.2 and 11.4 g/kg of DM, respectively. There was no effect on ruminal microbial protein synthesis and milk production; however, milk casein concentration was reduced linearly. There was no effect on the milk oxidative profile. Inclusion of CT at levels up to 20 g/kg of DM did not affect intake or microbial protein synthesis; however, added CT depressed the production of energy corrected milk and milk casein concentration.
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Radzhabov, F. M., M. T. Dostov, and M. M. Kurbanov. "EFFICIENCY OF HIGH-PROTEIN FEED ADDITIVES IN THE COWS DIET." Bulletin of NSAU (Novosibirsk State Agrarian University), no. 1 (March 27, 2019): 153–60. http://dx.doi.org/10.31677/2072-6724-2019-50-1-153-160.
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In the Republic of Tajikistan, linseeds, cotton seeds and rape seeds are used for producing vegetable oil. The authors highlight that until now the impact of cotton, linseed and rapeseed cake, which are seen as high-protein feed additives, on the dairy productivity, composition and properties of milk are not sufficiently investigated for the conditions of the country. The paper highlights the results of two scientific and economic experiments on investigation of the impact caused by cotton, linseed and rapeseed cake on the milk productivity, quality and physical and chemical parameters of milk of highproductive cows of the Black-and-WhiteTajik type breed. The researchers found out that application of various seed cakes when feeding cows in DIM increases the milk yield and improves the quality and physical and chemical parameters of milk. The authors observed experimental cows which received different types of seed cake and the milk their produced and found out that experimental cows exceeded 5.9-12.3 % according to the parameters of milk of natural fat; 4% milk - on 12.0-17.9 %. The cows from experimental groups produced 6.55-11.51 kg milk fat more. Feed costs in energetic feed unit pro 1 kg of 4-% -milk were 7.7-15.2% lower in the experimental groups of cows in comparison with the control group. According to organoleptic and sanitary-hygienic parameters, the milk produced by the cows from experimental groups was of higher quality and fulfilled the requirements of the state standard for purchased milk. Fat concentration increased on0.08-0.19%; total protein - on 0.07-0.15, dry skimmed milk residue - on 0.07-0.16 and dry matter - on 0.15-0.35%. According to the chemical composition, the milk produced by cows, which were fed with linseed cake was the best one. The content of milk sugar, ash, calcium and phosphorus was approximately the same in all the groups. The cost of 1 centner of milk in the experimental groups was 6.3-12.7% lower, and the profitability level of milk production was 9.8-16.3% higher in comparison with the control groups.
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Orlandi, T., C. A. Pozo, J. Schiavo, L. Oliveira, and G. V. Kozloski. "Impact of a tannin extract on animal performance and nitrogen excretion of dairy cows grazing a tropical pasture." Animal Production Science 60, no. 9 (2020): 1183. http://dx.doi.org/10.1071/an18726.
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Context Tannin extracts have been investigated as natural feed additives with the potential to decrease the enteric emission of methane and urinary N and to improve the productive performance of ruminants. However, the impact of this additive in dairy cattle grazing tropical grass pastures has not been extensively evaluated. Aims To evaluate the impact of the Acacia mearnsii bark extract (TA) on productive and nutritional variables in dairy cows grazing a Cynodon dactylon pasture and receiving supplementary corn silage and concentrate. Methods Fourteen multiparous Holstein dairy cows were assigned in a randomised block design to either of the following two treatments: concentrate without TA (control) or with 10 g of TA/kg dry matter (DM). The concentrate and corn silage accounted for ~0.30 and 0.30 of total DM intake respectively. Key results The dietary concentration of TA was 2.9 g/kg DM and it did not affect nutrients intake, milk production and composition, rumen microbial protein synthesis, plasma urea concentration or faecal N excretion. Total N and urea N excreted in urine were higher, whereas total N excreted in manure tended to be higher in TA treatment. Conclusions No productive advantage was obtained by including TA in the diet of dairy cows grazing Cynodon dactylon pasture. Instead, it increased the excretion of labile urinary N. Implications The effect of the use of TA as a feed additive for cows fed tropical grass-based diets is negative from the environmental point of view.
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Süli, Ágnes, Béla Béri, János Csapó, and Éva Vargáné Visi. "Possibility of oil seeds in feeding dairy cows." Acta Agraria Debreceniensis, no. 57 (March 20, 2014): 67–73. http://dx.doi.org/10.34101/actaagrar/57/1962.
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The efforts to modify the fatty acid composition of milk have intensified with health conscious nutrition coming to the forefront.This experiment of ours was designed to investigate to what extent the natural-based feed additives, such as oilseeds, can influence the fatty acid composition of cow’s milk.Further information was gained about feeding of oilseeds in specific amounts to be fitted into the technology of a large-scale dairy farm in practice. The feed supplements were whole, untreated rapeseed and whole, untreated linseed, as part of a total mixed ration. In case of saturated fatty acids when supplementing with whole rapeseed the most significant change was observable in the concentration of the caprylic acid, capric acid, undecylic acid, lauric acid, myristic acid, stearic acid. In case of unsaturated fatty acids the quantity of oleic acid enhanced considerably. When observating the feeding with whole linseed the concentration of many saturated fatty acids lowered (caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid). The quantity of some unsaturated fatty acids was showing a distinct rise after feeding with linseed, this way the oleic acid, α-linolenic acid, conjugated linoleic acid, eicosadienoic acid. The aim of the study was to produce food which meets the changed demands of customers, as well.
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LEE, A. J., L. A. SLIGER, C. Y. LIN, A. J. McALLISTER, T. R. BATRA, G. L. ROY, J. A. VESELY, J. M. WAUTHY, and K. A. WINTER. "FEED EFFICIENCY OF DAIRY COWS DURING FIRST LACTATION." Canadian Journal of Animal Science 69, no. 4 (December 1, 1989): 877–89. http://dx.doi.org/10.4141/cjas89-101.
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Feed efficiency was examined from approximately 3200 records of feed intake, milk yield, weight and weight change during the second eight weeks of first lactation on Holstein (H line), Ayrshire based (A line) and crossbred (C line) cattle. Herd, year-season and age at first calving with either genetic line or original breed source additive, heterotic and maternal effects were included in models. Heterotic and maternal effects on milk yield, TDN consumption and feed efficiency were generally unimportant when initial weight, weight change and milk yield or TDN covariates were considered. Line (A, H and C) and breed source additive effects within line were generally significant (P < 0.05). Efficiency was highly correlated phenotypically (0.64) with milk yield but only mildly correlated with measures of feed intake (0.13, 0.38). The negative correlation of efficiency with initial weight (−0.13) and weight change during the trial (−0.15) indicated that the larger animals or animals which gained more weight use a higher proportion of feed energy for maintenance requirements and growth than lighter animals. The strong correlations (0.63, 0.81) between milk yield and consumption arose in part from feeding concentrates according to milk production and made appropriate analyses difficult. Adjusted for covariates, Canadian (CH) and American (USH) Holsteins were the highest producers followed by Norwegian Red (NR), Agriculture Canada Holsteins (ACH), Ayrshires and Brown Swiss. North American Ayrshires (NAA) consumed the least TDN, adjusted for covariates, with Holsteins intermediate and Brown Swiss highest. In general, Ayrshires were more efficient than Holsteins. Feed efficiencies of NAA, Finnish Ayrshire and NR were superior to those of ACH with other genetic groups intermediate. Key words: Genetic, feed efficiency, lactation, cattle
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Kolling, G. J., S. C. B. Stivanin, A. M. Gabbi, F. S. Machado, A. L. Ferreira, M. M. Campos, T. R. Tomich, et al. "Performance and methane emissions in dairy cows fed oregano and green tea extracts as feed additives." Journal of Dairy Science 101, no. 5 (May 2018): 4221–34. http://dx.doi.org/10.3168/jds.2017-13841.
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Kissell, L., S. Davidson, B. A. Hopkins, G. W. Smith, and L. W. Whitlow. "Effect of experimental feed additives on aflatoxin in milk of dairy cows fed aflatoxin-contaminated diets." Journal of Animal Physiology and Animal Nutrition 97, no. 4 (June 7, 2012): 694–700. http://dx.doi.org/10.1111/j.1439-0396.2012.01311.x.
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Yu, Meng-Fei, Xin-Mao Zhao, Hang Cai, Jian-Ming Yi, and Guo-Hua Hua. "Dihydropyridine Enhances the Antioxidant Capacities of Lactating Dairy Cows under Heat Stress Condition." Animals 10, no. 10 (October 5, 2020): 1812. http://dx.doi.org/10.3390/ani10101812.
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Heat stress (HS), a nonspecific response to environmental heat, can seriously affect dairy cow health. Feed additives may alleviate HS in dairy cows by improving rumen fermentation efficacy, stimulating feed consumption, enhancing vasodilation, and/or improving antioxidant capacity. The temperature–humidity index (THI) indicates that spring is a non-HS season, and summer is an HS season. HS results in the decrease in dairy cow antioxidant capacities. Our results indicated the decrease in superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT), and total antioxidation (T-AOC) levels and the increase in malondialdehyde (MDA) level during HS season. Meanwhile, antioxidant indexes (SOD, GSH-Px, and T-AOC) were positively correlated with milk yield (p < 0.01), whereas MDA exhibited a significant negative correlation with milk yield (p < 0.05). In addition, the effects of dihydropyridine (DHP) on antioxidant capacity and ruminal microbial communities in dairy cows under HS were investigated. During summer, dairy cows were randomly assigned into two groups under HS, including a standard diet (S-ND) group and standard diet with 3 g/day/cow DHP (S-D) group. DHP treatment significantly restored SOD and GSH-Px levels under HS. Denaturing gradient gel electrophoresis results indicated that the DHP altered ruminal bacterial community mainly composed Proteobacteria and Firmicutes in dairy cows under HS. Our results suggest that DHP can enhance the antioxidant abilities of dairy cows with favorable effects on ruminal microbial communities under HS, further alleviating HS on dairy cows.
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Borisova, P. P., N. A. Nikolaeva, and N. M. Alekseeva. "EXCHANGE OF CALCIUM AND PHOSPHORUS IN THE BODY OF LACTATING SIMMENTAL COWS WHEN FEEDING FEED ADDITIVES FROM LOCAL RESOURCES IN YAKUTIA." Scientific Life 15, no. 5 (May 29, 2020): 708–18. http://dx.doi.org/10.35679/1991-9476-2020-15-5-708-718.
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The article presents the results of studies on the digestibility of nutrients and the metabolism of calcium and phosphorus in dairy cows. The balance of minerals in the body of cows when feeding feed additives from local resources indicates that the content of macro- and microelements in the diets of animals during the period of the experiments basically corresponded to the norms. The use of protein-vitamin-mineral supplements from local components (barley "Tammi", oats "Pokrovsky", dry brewer's grains, zeolite-hongurin, probiotic preparation "Khongurinobakt", as well as factory components: mineral premix "Megamix", synthetic amino acid – lysine and table salt) balanced the diet for missing nutrients and improved the palatability of the main feed. In the studied diets, 1 ECU had digestible protein – 107.1 g, 125 MJ of metabolic energy and 14.81 kg of dry matter. The ECE concentration in 1 kg of dry matter was 0.66. Feeding by cows of the 2nd experimental group of the recipe for feed additives No. 2 contributed to better digestibility and use of nutrients in the rations. The digestibility of nutrients of cows was higher in cows of the 2nd experimental group, while a high level of digestibility in comparison with the control and 1st experimental groups was established in relation to dry matter by 1.0 and 1.5%, organic matter by 2.8 and 2.0%, crude protein by 3.3 and 2.0%, crude fat by 2.3 and 1.5%, crude fiber by 3.0 and 2.0% and BEV by 0.5 and 1,3%. As a result of the study of the balance of minerals in the body of cows, the positive effect of using feed additives from local resources in the diets of cows has been proven. Consequently, the improvement in the metabolism of calcium and phosphorus in the diet is explained by the fact that protein-vitamin-mineral feed additives had a stimulating effect on the state of metabolic processes and the health of animals in general.
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Tasdemir, A. R., and M. Gorgulu. "Effects of dietary supplemental baker's yeast (Saccharomyces cerevisiae) and niacin on milk yield and milk composition of dairy cows." Proceedings of the British Society of Animal Science 1998 (1998): 217. http://dx.doi.org/10.1017/s0308229600034309.
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In the last twenty years, some probiotics, such as Aspergillus oryzae or A. niger (Pioneer, 1989), yeast culture (Saccharomyces cerevisiae) (Wallace, 1994) and some microbial growth promoters (e.g. thiamine, niacin) (Shield, 1981), were used as feed additives in order to improve rumen conditions and cellulose digestion in the rumen and milk yield of dairy cows. The present study was planned to determine whether dietary supplemental baker's yeast and niacin would have individual and/or synergistic effects on milk yield and milk composition of dairy cows under our experimental conditions.
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Pedroso, André de Faria, Luiz Gustavo Nussio, Armando de Andrade Rodrigues, Flávio Augusto Portela Santos, Gerson Barreto Mourão, and Waldomiro Barioni Júnior. "Performance of dairy cows fed rations produced with sugarcane silages treated with additives or fresh sugarcane." Revista Brasileira de Zootecnia 39, no. 9 (September 2010): 1889–93. http://dx.doi.org/10.1590/s1516-35982010000900005.
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An experiment was performed aiming at evaluating the performance of dairy cows fed sugarcane silages treated with additives compared to cows fed fresh forage. Twenty-four Holstein cows were grouped in blocks of three cows, according to parity order and milk production level, in multiple 3 x 3 Latin Square design to evaluate three types of ration (63% roughage and 37% concentrate in dry matter - DM): ration with silage treated with urea (5.0 g/kg of fresh forage - FF) + sodium benzoate (0.5 g/kg FF); ration with silage inoculated with Lactobacillus buchneri (5 x 10(4) cfu/g FF); ration with fresh sugarcane. Each evaluation period consisted of two weeks for adaptation and one week for data collection. Cows fed rations with silages treated with urea + benzoate and L. buchneri showed lower DM intake (18.5 vs 21.4 kg/day) and lower milk production (17.4 vs 18.6 kg/day) in comparison to those fed fresh forage ration. Fat content was higher in the milk of cows fed silage inoculated with L. buchneri compared to cows in the fresh forage group resulting in similar 3.5% fat corrected milk (FCM) among cows in both groups. Cows fed ration with silage treated with urea + benzoate presented intermediate fat content in milk but inferior FCM production compared to animals fed fresh sugarcane. Feed efficiency (kg FCM/kg DMI) was higher for cows fed ration produced with the inoculated silage (0.95), intermediate for cows that received silage treated with the combination of chemical additives (0.91) and lower for cows fed the ration with fresh sugarcane (0.83).
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Phipps, R. H., A. K. Jones, and P. Holder. "The effect of two liquid feed additives on feed intake and milk production in lactating dairy cattle." Proceedings of the British Society of Animal Science 1999 (1999): 94. http://dx.doi.org/10.1017/s1752756200002490.
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Earlier studies at the Centre for Dairy Research have examined the effect on feed intake and milk production of a range of by-products used in a total mixed ration (TMR) based on maize silage. These studies showed that distillers grains and molassed sugar beet feed (MSBF) could be used to replace cereal and protein supplements, with no effect on milk yield and dry matter (DM) intake but with a large reduction in milk fat and a little change in milk protein content. The aim of the current study was to examine the effect on feed intake and milk production of lactating dairy cows offered a TMR in which Stockmol 20, a molasses supplement (92 g/kg DM crude protein and 12.3 MJ ME/kg DM) and Regumaize 44, a high protein molasses urea based liquid (440 g/kg DM crude protein and 10.7 MJ ME/kg DM) were used to replace conventional energy and protein sources.
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Denkovich, B. S., Y. I. Pivtorak, and N. M. Gordiychuk. "Probiotic feed supplement “PROGAL” in feeding the milking cows." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 21, no. 91 (November 6, 2019): 65–70. http://dx.doi.org/10.32718/nvlvet-a9111.
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Full-fledged feeding of milking cows, based on scientifically based standards, is the key to realizing their genetic potential for productivity, preserving health, normalizing reproductive capacity, as well as the rational use of fodder resources and the proper payment of feed. Nowadays, the situation regarding the standardization of cattle feeding in the world and domestic, both in scientific and industrial practice, has changed radically, which requires a significant revision of the traditional provisions on the organization of full feeding of cows, especially high-productive ones. At the same time, the conceptual requirements for the organization of standardized nutrition and full feeding of dairy cattle should be based on the generalization of the world experience of the animal's need for energy, nutrients and biologically active substances, taking into account age and level of productivity, conditions of keeping with special emphasis on quality and products. In conditions of intensive milk production, in order to ensure high productivity and at the same time to maintain the health of animals, it is impossible to do it without the use of fodder of a natural substance, which should include additives with a probiotic effect. One of these is the “PROGAL” feed additive, which contains a probiotic component: Laktobacilus casei strain (CM 1759), a potentiating component is maltodextrin, a fructo-oligosaccharide, and is a probiotic additive for ruminants. High dairy productivity requires constant monitoring of metabolism, animal health, early diagnosis and timely treatment and prevention. The whole process of metabolism takes place in the digestive tract and is transmitted to the cells of the body through blood. This explains the relevance of the study of biochemical processes in rumination. The basis of the research is the task of optimizing the normalized feeding of real cows due to the use in the diet of probiotic supplement “PROGAL” on the background of a semi-concentrated juicy silage-hay type feeding. On the basis of scientific-economic (90 days) experiment, to determine its influence on the processes of digestion in the rumen, milk productivity and quality indicators of milk and to conclude on the optimal amount of it in the diet. The studies were conducted on Simmental cows in the conditions of the “Pchany-Denkovych” farm in the Zhydachiv district of Lviv region. It was found that feeding of the diet with feed supplements “PROGAL” aided to improve the intensity of metabolic processes in the body of cows, in particular in the rumen. Possible growth of amylo- and cellulosolytic and proteolytic bacteria was found, which ensured their enzyme activity and caused intensive hydrolysis of feed carbohydrates, resulting in an increase in LFA as precursors to milk fat. A positive result was obtained with respect to the level of dairy productivity of the cows of the experimental groups in comparison with the control group on the average daily milk yield, which is 1.0–2.3 kg, or 4.4–9.7% more. There was a steady upward trend in fat content in milk by 0.05% and protein by 0.02–0.04%, which indicates an improvement in its quality. Consequently, the studies conducted concerning the estimation of the productive action of bio supplement “PROGAL” on milking productivity of cows and quality indicators of milk, gives reason to confirm the feasibility of its use in the structure of the diet when feeding cows. The optimal dose of compound feed is 10 g/day, the maximum dose can be no more than 15 g/day. No adverse effects of “PROGAL” supplement on the overall functional status of cows were found.
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Micek, Piotr, Zygmunt M. Kowalski, Marek Sady, Jolanta Oprządek, Jacek Domagała, and Patrycja Wanat. "An energy-protein feed additive containing different sources of fat improves feed intake and milk performance of dairy cows in mid-lactation." Journal of Dairy Research 86, no. 1 (February 2019): 55–62. http://dx.doi.org/10.1017/s0022029919000062.
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AbstractThis research paper addresses the hypothesis that calcium salts combined with whole linseed and heat-treated rapeseed cake in one feed additive may efficiently stimulate the productivity of dairy cows and have a positive effect on the functional (health-promoting) properties of milk fat. The article proposes the composition of such an additive (EFA) and evaluates its nutritional effect in the diet of mid-lactation dairy cows. Forty multiparous Polish Holstein-Friesian (PHF) dairy cows were allocated to one of four treatments (10 cows/treatment) and fed a TMR diet without EFA or with EFA in the amount of 1, 2 or 3 kg/d per head for a 63-d-period. Individual intake of dry matter (DMI) and nutrients was determined, as was milk yield and composition, including fatty acid profile, fat soluble vitamins, cholesterol and phospholipids (PLs). Irrespective of the treatment group, cows fed diets with EFA had higher (P < 0.05) DMI, milk yield and milk vitamin D3 and K2 concentration but lower (P < 0.01) milk protein, fat and cholesterol contents. The additive did not affect the milk concentrations of β-carotene or vitamin A or E. The PLs content was correlated with fat concentration in the milk and decreased as the level of EFA in the diet increased. An increase in phosphatidylcholine in total PLs was accompanied by a reduction in the proportion of sphingomyelin (P < 0.05). The use of EFA increased the proportion of polyunsaturated fatty acids (PUFA) in the total fatty acids in the milk. The addition of EFA in the amount of 3 kg increased the proportion of PUFA by 77% (P < 0.05). In conclusion, the use of an energy-protein feed additive (EFA) increases feed intake and milk yield in cows and alters milk fat composition, improving its functional properties. Higher milk production compensates for the decrease in solids concentration in the milk, which has no effect on their daily yield.
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He, Yuhua, Rongzhen Zhong, Long Cheng, Peihua You, Yiyong Li, and Xuezhao Sun. "Effects of the Supplementation of Lysophospholipids through Pelleted Total Mixed Rations on Blood Biochemical Parameters and Milk Production and Composition of Mid-Lactation Dairy Cows." Animals 10, no. 2 (January 28, 2020): 215. http://dx.doi.org/10.3390/ani10020215.
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Lysophospholipids (LPL), a new feed additive, were supplemented to a pelleted total mixed ration (TMR) of dairy cows to examine its effects on feed intake, production, and composition of milk and plasma biochemical parameters. Two dietary treatments included diets supplemented without (control diet; CON) or with LPL at a dose of 0.5 g/kg of pelleted TMR. Twelve multiparous, mid-lactation, Holstein cows (Bodyweight 730 ± 9.3 kg; 100 ± 6.0 days in milk) were randomly assigned to one of the two dietary treatments with a 42-day measurement period after a 14-day adaptation period. Feed and water were provided ad libitum. Feed intake and milk yields were recorded daily, blood samples were collected fortnightly, and milk samples weekly. The results showed that the supplementation of LPL did not change feed dry matter intake, milk yields, and milk composition. However, it increased total protein and globulin and the activity of alkaline phosphatase and decreased total cholesterol in plasma. This study suggests that LPL may have beneficent effects in animal health but might be not a feasible feed additive to increase production for dairy cows fed a pelleted TMR.
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Alekseeva, Nurgustana Mikhailovna, Paraskovya Prokopyevna Borisova, and Natalia Afanasyevna Nikolaeva. "Influence of new recipes of feed additives on the biochemical status of the blood of Simmental cattle in Yakutia." Agrarian Scientific Journal, no. 8 (September 10, 2021): 62–66. http://dx.doi.org/10.28983/asj.y2021i8pp62-66.
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The article presents the results of the influence of new recipes for feed additives made on the basis of local resources on the biochemical parameters of the blood of dairy cows of the Simmental breed in the conditions of Yakutia. Research objectives: 1) study the chemical composition of new recipes for feed additives produced from local resources; 2) determination of the influence of the new formulation of feed additives from local resources on the biochemical parameters of blood in cattle of the Simmental breed. In our experiments, there were no statistically significant changes in the biochemical parameters of blood during the period of the experiments, all the studied blood parameters, both at the beginning and at the end of the experiments, in all groups of animals were within the physiological norms and did not have significant differences between the groups. Consequently, feeding the formulation of feed additives in the composition of Tammi barley, Tuymaada wheat, Pokrovsky and Vilensky oats, dry brewer's grain, Hongurin zeolite, Hongurinobakt probiotic in the diet of cows and heifers of the Simmental breed contributed to the activation of vital processes in the body, assimilation of feed and improved appetite. It should be noted that the cows of the II-experimental group showed a tendency to increase the composition of amino acids. At the beginning of the experiment, the blood lysine content increased by 5.22 mg /% compared with the control and by 5.79 mg /% with the I-experimental group, methionine by 19.67 mg /% and by 10.02 mg /% respectively. The same pattern is observed for the rest of the amino acid composition at the end of the experiment. The data obtained indicate that the optimization of the feed rations of Simmental cows in terms of the content of vitamins of groups A and C through the use of the formulation of protein-vitamin-mineral feed additives had a positive effect on the hematopoietic function. So, if the content of vitamins A and C at the beginning of the experiment was less, then at the end of the experiment the same indicators returned to normal.
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Klebaniuk, Renata, Grzegorz Kochman, Edyta Kowalczuk-Vasilev, Eugeniusz R. Grela, Maciej Bąkowski, Magdalena Olcha, and Filomena Dunster. "Energy efficiency of diet for periparturient dairy cows supplemented with free fatty acids or glucogenic additives." Medycyna Weterynaryjna 72, no. 12 (2016): 760–67. http://dx.doi.org/10.21521/mw.5599.
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The aim of the study was to compare the efficiency of two energy preparations used at fixed doses, but for different lengths of time: 1) a loose mixture of propylene glycol and sodium propionate, and 2) a granular formulation of free fatty acids produced from palm oil and palm nut, non-degradable in the rumen.. A three-factorial experiment was carried out on 5 groups of Polish Black and White Holstein-Friesian cows (10 animals each) which were within the transition period. The aim of the experiment was to determine the effect of two energy preparations administered at a constant dose, but over different time periods, on the animals' performance, as well as on their milk yield and composition. The following treatment groups were formed: control group C, which received a standard diet; experimental groups G1 and G2, which received a dietary additive of a glucogenic preparation; and experimental groups F1 and F2, which received a free fatty acid preparation. The diet of the transition cows was supplemented with the full dose of the additives (500g/head/day) for 2 weeks before the expected calving and 3 or 6 weeks of lactation. The present research confirmed the benefits of dietary inclusion of energy supplements for transition cows. Supplementation with both glucogenic and free fatty acid preparations reduced the negative energy balance in the cow’s organism and improved milk production and composition. The milk yield, higher by ca. 10% for the cows fed diets with energy additives (relative to the control treatment), provides evidence of a substantial beneficial effect of supplemental dietary energy on the efficiency of cow milk production. In the present study, the best basic milk composition was obtained in the cows receiving a dietary addition of the glucogenic preparation at a dose of 500g/head/day until the end of the 6th lactation week. The animals from this group also had the highest milk yield evaluated for 305 days. In order to improve the energy balance in high-yielding transition cows, it is recommended that dairy managers apply feed energy additives based on propylene glycol and sodium propionate.
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Zhang, Fan, Xuemei Nan, Hui Wang, Yuming Guo, and Benhai Xiong. "Research on the Applications of Calcium Propionate in Dairy Cows: A Review." Animals 10, no. 8 (August 3, 2020): 1336. http://dx.doi.org/10.3390/ani10081336.
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Calcium propionate is a safe and reliable food and feed additive. It can be metabolized and absorbed by humans and animals as a precursor for glucose synthesis. In addition, calcium propionate provides essential calcium to mammals. In the perinatal period of dairy cows, many cows cannot adjust to the tremendous metabolic, endocrine, and physiological changes, resulting in ketosis and fatty liver due to a negative energy balance (NEB) or milk fever induced by hypocalcemia. On hot weather days, cow feed (TMR or silage) is susceptible to mildew, which produces mycotoxins. These two issues are closely related to dairy health and performance. Perinatal period metabolic disease significantly reduces cow production and increases the elimination rate because it causes major glucose and calcium deficiencies. Feeding a diet contaminated with mycotoxin leads to rumen metabolic disorders, a reduced reproductive rate (increased abortion rate), an increased number of milk somatic cells, and decreased milk production, as well as an increased occurrence of mastitis and hoof disease. Propionic acid is the primary gluconeogenic precursor in dairy cows and one of the safest mold inhibitors. Therefore, calcium propionate, which can be hydrolyzed into propionic acid and Ca2+ in the rumen, may be a good feed additive for alleviating NEB and milk fever in the perinatal period of dairy cows. It can also be used to inhibit TMR or silage deterioration in hot weather and regulate rumen development in calves. This paper reviews the application of calcium propionate in dairy cows.
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Monteiro, Hugo F., Ana Laura J. Lelis, Virginia L. N. Brandao, Andressa Faccenda, Andre S. Avila, Jose Arce-Cordero, Lorrayny G. Silva, et al. "In vitro evaluation of Lactobacillus plantarum as direct-fed microbials in high-producing dairy cows diets." Translational Animal Science 4, no. 1 (December 21, 2019): 214–28. http://dx.doi.org/10.1093/tas/txz187.
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Abstract The objectives of this study were: 1) to compare the effects of live yeast (LY), yeast fermentation product (YFP), a mix of Lactobacillus acidophilus and Propionibacterium freudenreichii (MLP), and Lactobacillus plantarum included as additives in dairy cows’ diets on in vitro ruminal fermentation and gas production (GP); and 2) to evaluate the effects of L. plantarum as direct-fed microbials (DFM) in dairy cows’ diets on in vitro ruminal fermentation, GP, nutrient digestibility, and N metabolism. Three experiments were carried out: Exp. 1 had the objective to compare all additives regarding ruminal fermentation parameters: an Ankom GP system was used in a completely randomized design, consisting of four 48 h incubations, and eight replications per treatment. There were eight treatments: a basal diet without additive (CTRL) or with one of the following additives: LY, YFP, MLP, or L. plantarum at four levels (% of diet Dry Matter (DM)): 0.05% (L1), 0.10% (L2), 0.15% (L3), and 0.20% (L4). In Exp. 2, a batch culture was used to evaluate ruminal fermentation, and CO2 and CH4 production using the same treatments and a similar experimental design, except for having 16 replications per treatment. Based on Exp. 1 and 2 results, Exp. 3 aimed at evaluating the effects of the L. plantarum on ruminal true nutrient digestibility and N utilization in order to evaluate the use of L. plantarum as DFM. The treatments CTRL, MLP, L1, and L2 were used in a replicated 4 × 4 Latin square design using a dual-flow continuous culture system. Data were analyzed using linear and nonlinear regression; treatment means were compared through contrasts, and L treatments in Exp. 1 and 2 were tested for linear, quadratic, and cubic effects. In Exp. 1, all treatments containing additives tended to reduce OM digestibility as well as reduced total volatile fatty acids (VFA) concentration and total GP. The YFP had greater OM digestibility than LY, and MLP treatment had greater total VFA concentration compared to L. plantarum treatments. In Exp. 2, additives reduced CO2 production, and there were no major differences in CH4. In Exp. 3, all additives reduced NH3-N concentration. In conclusion, pH and lactate concentration were not affected in all three experiments regardless of additive tested, suggesting that these additives may not improve ruminal fermentation by pH modulation; and L. plantarum may improve ruminal N metabolism when used as DFM in high-producing dairy cows’ diets, mainly by reducing NH3-N concentration.
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Radchicov, V., V. Tzai, A. Kot, T. Sapsaleva, G. Besarab, S. Razumovskyi, and L. Pirova. "Efficiency of energy feed supplement Cobiotic Energy in diets for cows." Tehnologìâ virobnictva ì pererobki produktìv tvarinnictva, no. 2(150) (December 17, 2019): 81–92. http://dx.doi.org/10.33245/2310-9289-2019-150-2-81-92.
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The influence of feeding high-performance cows of the energy feed additive Cobiotic Energy on the physiological state and productivity have been studied. Experiments have been carried out on with groups of dairy cows with 10 animals each during 55 days. The diet of cows of the first control group consisted of haylage of cereal and leguminous plants, corn silage, molasses, cereal hay, and feed of own production. 0.3 kg of feed additive has been introduced into the diet of animals of the experimental group II 15 days before calving, in the first 10 days after calving, as compensation for energy losses, 0.75 kg 3 times a day. In the next 30 days of the milking season with the ration of animals of the experimental group II, 0.25 kg of Cobiotic Energy has been fed, sprinkling it on top of the feed mixture. It has been established that the use of feed additives in the diets of cows has a positive effect on feed intake, physiological condition and animal productivity. It was determined that concentration of metabolizable energy in 1 kg of dry matter of the diet made 9–16– 9.2 MJ. The diet contained 12.8–13.0 % of crude protein per 1 kg of dry matter, the concentration of fiber in dry matter made 22.3– 22.0 %. The sugar-protein ratio made 1.04:1; 1.0. In terms of energy nutrition, the diet of the experimental group due to the inclusion of the feed supplement was 6 MJ higher, however, it slightly affected concentration of metabolizable energy of the diet. The energy-protein ratio corresponded to 0.2– 0.21. The nitrogen balance in the rumen was positive in all the animals and was at the level of 0.13–0.4 g. Feeding animals with supplement in the diet in the last 15 days of the dry period, during the first 10 days after calving and the next 30 days of the milking period promoted activation of protein biosynthesis and energy metabolism, as evidenced by an increase in serum total protein and its albumin fraction and ultimately increased animal productivity. The studied supplement use in the diets for cows makes it possible to increase performance of cows by 8.0 %, fat content by 0.1 %, protein by 0.24 %, lactose by 0.11 %, reduce the cost of feed for obtaining natural milk by 6.1%. Key words: feed supplement Cobiotic Energy, cows, diets, blood, milk yield, feed costs, milk quality.
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Daning, Dewi Ayu Ratih, L. M. Yusiati, C. Hanim, and B. P. Widyobroto. "The Use of Essential Oils as Rumen Modifier in Dairy Cows." Indonesian Bulletin of Animal and Veterinary Sciences 30, no. 4 (December 28, 2020): 189. http://dx.doi.org/10.14334/wartazoa.v30i4.2524.
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<p class="awabstrak2">Feed efficiency is essential for dairy cows because it can increase production and quality of milk, and reduce methane emissions in the environment. One of the strategies on increasing feed efficiency is using rumen modifier. Essential oils have antimicrobial activities and have been used in rumen modifier in dairy cows. The aim of this paper is to review several studies on the utilization of essential oils as feed additive to enhance production and quality of milk of dairy cow. Based on some research reports, using essential oils which contained thymol, eugenol, cinnamaldehyde and carvacrol in dairy cattle feed decreased the population of protozoa, methanogens, proteolytic, and biohydrogenase bacteria. The impact of engineering of the rumen microbial population has led to optimal rumen fermentation resulted in the efficiency of carbohydrate, protein, and fat utilizations. It can be concluded that essential oils are potential as rumen modifier by inhibit methanogenesis, increase propionate, energy efficiency and ruminal by pass protein. The inconsistent results on milk production and milk fat requires further research to study deeper the effect of dosage and type of essential oils on dairy cows performance.</p>
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Keady, Tim, Seamus Hanrahan, Christina Marley, and Nigel David Scollan. "Production and utilization of ensiled forages by beef cattle, dairy cows, pregnant ewes and finishing lambs - A review." Agricultural and Food Science 22, no. 1 (March 27, 2013): 70–92. http://dx.doi.org/10.23986/afsci.6852.
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This paper reviews the production of, and factors affecting the performance of dairy cows, beef cattle and sheep offered silage based diets in Ireland and UK. Digestibility is the most important factor influencing the feed value of grass silage and consequently animal performance. Each 10 g kg-1 increase in digestive organic matter in the dry matter (DOMD) increases milk yield of dairy cows by 0.33 kg d-1, carcass gain of beef cattle by 23.8 g d-1 , carcass gain of finishing lambs by 9.3 g d-1, lamb birth weight by 52.3 g and ewe weight post lambing by 1.3 kg, respectively. Factors influencing feed value of grass silage are discussed including harvest date, wilting, fertilizer management, chop length and use of additives at ensiling. Maize silage increases the performance of cattle and sheep whilst whole crop wheat silage has no beneficial effect. Advances in silage technology, has enabled the ensiling high protein forages, such as red clover, lucerne and kale.
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Sukhanova, S., G. Uskov, T. Leshchuk, N. Pozdnyakova, V. Yaroslavtsev, and I. Tsibulsky. "Mineral feed additives in the rations of lactating cows." Kormlenie sel'skohozjajstvennyh zhivotnyh i kormoproizvodstvo (Feeding of agricultural animals and feed production), no. 4 (April 1, 2020): 49–56. http://dx.doi.org/10.33920/sel-05-2004-06.
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Scientists of the Kurgan State Agricultural Academy named after T. S. Maltsev conduct research on the development of diff erent feed additives and compound feeds, their use in feeding animals and poultry. It has been developed mineral additives, which used mineral components to meet the needs of macro- and microelements of cows during lactation. The purpose of the work was to solve the problem of lack of minerals in animal husbandry by preparing granular feed additives based on raw materials of domestic production, enriched with trace element salts. Feeding of experimental mineral additives positively aff ected the average daily milk yield already in the 1st month of lactation. Thus, in the 1st experimental group more milk has been obtained by 0.6 % and in the 2nd group by 1.9 % compared to the control one. In the 2nd month of lactation milk yield in the 1st experimental group was greater by 2.3 %, and in the 2nd experimental group – 4.0 % compared to the control group. The same trend has been observed in the following months: in the 3rd month of lactation the diff erence in milk yield compared to the control group was in the 1st experimental group 4.0 %, in the 2nd experimental group – 6.5 %, in the 4th month, respectively, 5.7 and 9.3 %. Milk yield for 120 days of lactation in cows of the control group was 2951.4 kg of milk (in terms of 4 % fat content) in the 1st experimental group more by 3.4 %, and in the 2nd experimental group by 6.2 %. The fat content in the milk of cows of the experimental groups was higher by 0.03 and 0.04 abs.%, and protein by 0.02 and 0.03 abs.%, respectively. In this regard, the sale price of 1 kg of milk has changed. In the control group it amounted to 21,48 rubles, in the 1st experimental group more by 0,7 %, and in the 2nd group by 1,0 %. This led to an increase in the profi tability of milk production: in the 1st experimental group by 4,5 %, and in the 2nd experimental group by 6,8 %. Consequently, the feeding of new mineral additives allowed to reduce the prime-cost of milk, increase milk productivity of cows and profi tability of milk production.
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Khomenko, R., B. Semenov, and T. Kuznetsova. "The influence of feed additives used to correct metabolic processes in the rumen cows to biochemical indicators of blood from after calving." Genetics and breeding of animals, no. 2 (July 18, 2021): 10–15. http://dx.doi.org/10.31043/2410-2733-2021-2-10-15.
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Purpose: estimation of the possibility of using a mixture of feed additive "BioGrom SC" and the food antibiotic "Monenzin" for normalizing metabolic processes in highly productive cows in the transit period.Materials and methods. Studies were conducted because of the tribal plant of the Leningrad region. Two groups of animals were selected on the principle of analogs (experimental and control) 20 goals in each. The experimental group of cows 21 days before the calving and for 14 days after the calves were given a mixture of feed additive "BioGrom SC" and the food antibiotic "Monenzin". For the cottage additives, calcium carbonate (chalk) was used as a filler in the amount of 250 g with the addition of 10-15 g. Supplements "BioGrom SC" by 1 head. The mixture was prepared at the rate of 20 goals and a food antibiotic "Monenzin" was added to it at the rate of 100 mg per 1 kg of a mixture of feed additive with filler. The resulting mixture was fed by animals of the experimental group. All animal experimental and control groups take blood for 21 days before the hotel. The total protein, beta hydroxy acid, acetoacetic acid, alkaline blood reserve, calcium-phosphoric ratio, glucose is determined. At the end of the transit period on the 21st day of lactation, the blood of animal control and experimental groups was repeatedly investigated.Results. In the cows of the experimental group, in comparison with the cows of the control group at the end of the transit period, a decrease in such biochemical indicators was observed as beta hydroxy acid (a decrease to 0.84 ± 0.03 mmol / l), acetoacetic acid (decrease to 0.4 ± 0, 04 mmol / l). The animals of the experimental group decreased the content of the general protein (77.0 ± 0.08 g / l). Also, the data of the backup alkalinity of blood (acidose indicator) are within reference values. Calcium phosphorus ratio was also within the normal range.Conclusion. Introduction to the diet of a mixture of feed additive "BioGrom SC" and food antibiotic "Monenzin" normalize some biochemical blood indicators in cows in the transit period. At the same time, without correction of metabolic processes, cows are observed ketosis and acidosis, which can lead to premature disposal of animals from herd and as a result of economic losses. Thus, the use of the mixture is shown for the prevention and treatment of acidosis of the scar, metabolic acidosis, ketosis in cattle of the dairy direction of productivity.
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Valitov, Haidar Zufarovich, Andrey Ivanovich Frolkin, Margarita Vasilyevna Zabelina, and Valentina Anatolievna Kornilova. "Application of a feed additive based on humic acids in the diet of dairy cattle." Agrarian Scientific Journal, no. 7 (August 5, 2021): 58–61. http://dx.doi.org/10.28983/asj.y2021i7pp58-61.
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The effect of the feed additive based on humic acids "Reasil® Humic Vet" on the body of lactating cows has been studied. It has been shown that in the process of lactation, the intensity of metabolic processes increases, as evidenced by the blood counts of cows in the experimental group that were fed with "Reasil® Humic Vet". The content of hemoglobin was higher by 5.5%, erythrocytes - by 6.6%, alkaline reserve - by 5.2% (P <0.05). Animals make better use of dietary nutrients, which are efficiently converted into products. The coefficient of constancy of lactation in cows of the experimental group was 85.4, which is 3.6 points higher than in the control. The feed additive had a positive effect on the prevention of inflammatory processes in the udder of dairy cows. In the experimental group of four cows with mastitis, three of them were recovered. It has been established that the optimal dosage of humic acids in the diets of lactating cows is 1.5 ml of 10% Reasil® Humic Vet solution per 10 kg of live weight.
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Lowman, B. G., N. A. Scott, and A. J. Mudd. "Response of autumn calving suckler cows to the feed additive Avotan." Proceedings of the British Society of Animal Production (1972) 1994 (March 1994): 96. http://dx.doi.org/10.1017/s030822960002643x.
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Avotan is a feed additive commonly used in finishing and growing beef cattle systems to improve feed efficiency - producing higher liveweight gains on similar feed intakes. The active ingredient is a glycopeptide antibiotic (Avoparcin, Cyanamid UK) active against Gram - positive bacteria. In 1991 Avotan received an EEC product licence for use in dairy cows. Extensive trials showed that on average Avotan gave a 5% response in milk yield on the same level of feed intake with no effect on milk composition. No information was however available on the use of Avotan in beef cows. This trial reports on the response of autumn calving suckler cows to Avotan in terms of both cow and calf liveweight change and cow fertility.
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Zhang, Fan, Xuemei Nan, Hui Wang, Yiguang Zhao, Yuming Guo, and Benhai Xiong. "Effects of Propylene Glycol on Negative Energy Balance of Postpartum Dairy Cows." Animals 10, no. 9 (August 28, 2020): 1526. http://dx.doi.org/10.3390/ani10091526.
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With the improvement in the intense genetic selection of dairy cows, advanced management strategies, and improved feed quality and disease control, milk production level has been greatly improved. However, the negative energy balance (NEB) is increasingly serious at the postpartum stage because the intake of nutrients cannot meet the demand of quickly improved milk production. The NEB leads to a large amount of body fat mobilization and consequently the elevated production of ketones, which causes metabolic diseases such as ketosis and fatty liver. The high milk production of dairy cows in early lactation aggravates NEB. The metabolic diseases lead to metabolic disorders, a decrease in reproductive performance, and lactation performance decline, seriously affecting the health and production of cows. Propylene glycol (PG) can alleviate NEB through gluconeogenesis and inhibit the synthesis of ketone bodies. In addition, PG improves milk yield, reproduction, and immune performance by improving plasma glucose and liver function in ketosis cows, and reduces milk fat percentage. However, a large dose of PG (above 500 g/d) has toxic and side effects in cows. The feeding method used was an oral drench. The combination of PG with some other additives can improve the effects in preventing ketosis. Overall, the present review summarizes the recent research progress in the impacts of NEB in dairy cows and the properties of PG in alleviating NEB and reducing the risk of ketosis.
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Berta Vanda Sütő, Zsuzsanna Kárnyácki, and Béla Béri. "Effect of vitamin e and selenium supplementation on the antioxidant content of milk and dairy products in dairy cows." Acta Agraria Debreceniensis, no. 44 (November 20, 2011): 9–12. http://dx.doi.org/10.34101/actaagrar/44/2598.
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In 2007, the aim of the Ányos Jedlik program and the call for tenders was to support application-oriented, strategic research and development projects, which can increase the competitiveness of the Hungarian economy. In the framework of our project, we intended to examine whether non-protected antioxidants - in this case: vitamin E and selenium – used as feed-additives can increase the antioxidant content of milk. The milk with an increased level of vitamin E and selenium content can be used for producing functional foods which will represent competitive products on the current market of milk products. Our results show that the use of vitamin E and selenium as feedadditives can significantly increase the amount of vitamin E and selenium in the milk and also in the diary products.
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Kulakova, T. S., E. A. Tretyakov, L. L. Fomina, E. N. Zakrepina, and S. G. Zhuravlyova. "The effect of adsorbent and phytobiotic the density of diatomaceous fauna of the rumen and milk productivity of cows." Rossiiskaia selskokhoziaistvennaia nauka 1, no. 1 (January 15, 2019): 43–45. http://dx.doi.org/10.31857/s2500-26272019143-45.
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The aim of the work is to study the effect of adsorbent "Vermiculite" and phytobiotic "Extract Ruminant " on the density of infusoria fauna of the rumen and on the milk productivity of cows. The object of the research is lactating cows. As a result of the research it has been revealed that inclusion of adsorbent "Vermiculite" and phytobiotic "Extract Ruminant" in the diets of dairy animals had a positive effect on the density of infusoria in the rumen, having increased their number by 52.3 15.4% compared to the animals of the same age in the control group. The use of feed additives contributed to the increase in milk productivity of cows by 4.1 – 3.8% in the 1st and 2nd experimental groups, respectively.
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Karmatskikh, Yu A., and N. M. Kostomakhin. "Milk productivity of cows, quality of milk and dairy products when using natural feed additive." Kormlenie sel'skohozjajstvennyh zhivotnyh i kormoproizvodstvo (Feeding of agricultural animals and feed production), no. 12 (December 1, 2020): 13–21. http://dx.doi.org/10.33920/sel-05-2012-02.
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The organization of feeding of highly productive cows is one of the most difficult tasks in dairy cattle breeding. The purpose of the work was to study the influence of natural mineral additive on the productivity, composition and some technological qualities of milk of cows of Black-and-White breed of Ural type. Research and production experiment has been carried out in CJSC “Glinki” in the Ketovsky district in the Kurgan region on Black-and-White cows. The influence of bentonite additive in the ration of highly productive cows during the period of increasing the milk yield on the composition and technological quality of milk and dairy products has been determined. In general, for the first 100 days of lactation the cows of the experimental group have produced by 191 kg more natural fat milk or 8,4 %, compared to the control group. In terms of 4 % milk from animals of the experimental group has been got by 233 kg or 9,3 % more than of the control group. The yield of milk fat in the experimental group was by 10,44 kg or 12,9 % more than the control group. The difference in milk protein yield for 100 days of lactation was 7,34 kg or 9,8 %. The economic indicators (prime-cost, profitability) of milk production when feeding the mineral additive bentonite to cows have been calculated. With an increase in the total cost of obtaining milk from cows of the experimental group, caused by higher milk yields and the purchase of bentonite, the revenue from the sale of milk from this group was by 7,83 thousand rubles or 8,4 % more. As a result, milk production from animals of the experimental group was by 3,44 % more efficient. It has been found that the inclusion of bentonite in the composition of concentrated feed in the amount of 400 g/head/day allowed to reduce their expenditure, as well as EFU and digestible protein, which ultimately provided a higher level of profitability of milk production.
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Czerniawska-Piątkowska, Ewa, Maciej Szewczuk, H. Kamieniecki, M. Adamski, A. Bruś, and Daniel Falta. "The comparison of dairy performance and some reproductive parameters of holstein cows imported from Sweden and their Polish age mates." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 55, no. 1 (2007): 39–44. http://dx.doi.org/10.11118/actaun200755010039.
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The general aim of the present work was to compare dairy performance and some reproductive parameters of Holstein-Friesian (HF) cows imported from Sweden as an in-calf heifers, and their age mates in Poland. The animals were kept freely on the deep litter on the farm owned by Agro-company “Witkowo” and feeding was based on TMR (total mixed ration) system during whole year. All ration’s ingredients (bulky feed, concentrate, miscellaneous additives) were mixed and fed as all-mash. The feed ration depended from the physiological condition of a cow and it was composed of corn and grass ensilage, mash concentrate, crushed corn meal, brewer’s grains and beet pulp.Cows imported from Sweden as in-calf heifers obtained higher milk, fat and protein yield in both lactations comparing to home cows. Significant statistical differences were observed for kg of milk, kg of protein, for FCM (P<0.01) and for kg of fat (P<0.05) in 2nd lactation. Fat and protein content in milk was in average higher for home cows (P<0.01). Big differences (P<0.01) were observed in SBT (proportion of protein to fat content) and RTB (difference between concentration of fat and protein) at imported cows in 2nd lactation. As far as reproduction parameters (gestation interval, calving interval, insemination index) are concerned was cows from Sweden better too. Heifers from Sweden calved earlier. The usage of high genetic potential of imported cows is possible only with providing them optimum living conditions suitable to their needs.
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Kasatkina, I., and A. Serkova. "The influence of energy additive Tirzana BSK on the productivity and reproductive traits of cows of Ayrshire breed." Kormlenie sel'skohozjajstvennyh zhivotnyh i kormoproizvodstvo (Feeding of agricultural animals and feed production), no. 5 (May 1, 2020): 45–53. http://dx.doi.org/10.33920/sel-05-2005-05.
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One of the main tasks for dairy breeding is to increase the production of milk as the most popular food product. The realization of the genetic potential of a highly productive cow during the period of increasing the milk yield is possible with the correct organization of feeding during the transition period. High milk productivity and intensive metabolism in cows require normalized feeding of animals taking into account their physiological state and the month of lactation. Feed consumption is reduced in the last day before calving, and immediately after it the need for energy increases dramatically and the so-called “energy pit”. There is the negative energy balance at this stage. In this case, it is necessary to solve the main task to prepare the digestive system for assimilation of a large amount of feed after calving. This means that it is necessary to search for means and methods of input eff ective special additives into the cow’s body. The results of research on the eff ect of the feed additive Tirzana BSK on the feed intake of highly productive cows of Ayrshire breed, their nutritional activity, milk productivity and reproductive abilities of animals have been presented in the article. It has been found that the input of energy additive in the amount of 300 g per head per day helps to increase milk productivity, reduce expenditures of feed per unit of production and reduce the time from calving to eff ective insemination. It has been experimentally proved that it is more eff ective to use the additive from late dry period to mid of the period of increasing the milk yield, which determines the growth of milk yields by 12,4 % with the reduction by 7,0 % in expenditures of feed for production, as well as the reduction in the day open period by 19 days.
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Rybachuk, Zh V., I. V. Prisyazhnyuk, and K. O. Chirta-Sinelnyk. "“EMBIOTIC” Ltd. “EM-Ukraine” – an alternative to antibiotic therapy for digestive disorders in calves." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 23, no. 102 (March 30, 2021): 8–13. http://dx.doi.org/10.32718/nvlvet10202.
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The prophylactic efficacy of diarrhea in calves with different methods and doses of feed additive “EMBIOTIC” during the first 14 days of life was studied. Almost 50 % of dairy calves had symptoms of diarrhea. Effective treatment regimens for such animals included one of the antibiotics (azithromycin or 15 % amoxicillin emulsion) and, if necessary, sulfonamide drugs (trimeratinvet with the drugs sulfadimesine and trimethoprim) or the drug sulfate lozin, which includes sulfonamide and antibiotics (tylosin tartrate, oxytetracycline, sulfadimesine, trimethoprim). Simultaneously, symptomatic therapy was performed with the use of refinery – 10 % solution of ketoprofen in the form of the drug ketonil, which provided analgesia and reduction of body temperature to physiological limits. Еhere is always a drug cyanophore (LR butaphosphane and cyanocobalamin) as a general stimulant in the scheme. To conduct the experiment, 5 groups of animals were formed, 6 in each, age – the first day after birth. From the first to the 14th day of life, from the first or second colostrum, each calf from different groups was given daily 5 cm3, 10 cm3 and 15 cm3 of feed additive “EMBIOTIC”, respectively. The fourth experimental group – control (probiotic was not received), and the fifth – calves obtained from cows, which 10–14 days before and after calving daily with feed or water received 80–100 cm3 of feed additive “EMBIOTIC”, and calves the tested drug was not used. During the experiment twice a day (morning and evening), clinical observation and examination of calves of all experimental groups. Two days later, calves that received 5 cm3, 10 cm3 and 15 cm3 of feed additive “EMBIOTIC” were registered to improve appetite, increased mobility and prolonged and pronounced sleep. In animals that received with milk 10 cm3 and 15 cm3 of feed additives, during the observation period, disorders of the digestive system were not registered. Two calves, receiving 5 cm3 of EMBIOTICS daily, had symptoms of minor diarrhea for only 12 days, but there was no appetite. After 24 hours, the symptoms of indigestion went away on their own without the use of any drugs. Newborn calves obtained from cows that received “EMBIOTIC” as part of their diet or water were rated 9–10 on the Apgar scale. From the 3rd day they ate straw and they registered chewing gum for 3.7 ± 0.2 days of life. Within 14 days of observation of disorders of the gastrointestinal tract, they were not registered. Thus, the feed additive “EMBIOTIC” provides prevention of diarrhea in calves.