Relevant bibliographies by topics / Feed additives for dairy cows

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Academic literature on the topic 'Feed additives for dairy cows'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Feed additives for dairy cows"

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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 &lt;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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Dissertations / Theses on the topic "Feed additives for dairy cows"

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Stroud, Jillian Summer. "The Effect of Feed Additives on Aflatoxin in Milk of Dairy Cows Fed Aflatoxin-Contaminated Diets." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-07262006-181138/.

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Sixty lactating Holstein cows were used in a replicated block experiment to determine the efficacy of eight feed additives to reduce the transfer of aflatoxin (AF) from feed to milk. Six cows were allocated to each treatment group and 12 to a control group. All cows were fed the same aflatoxin-contaminated total mixed ration (TMR) with either no additive (control) or one of eight additives at 0.5% of the TMR dry matter (DM). Milk samples were collected twice daily to evaluate changes in milk AF concentration, milk AF excretion (milk AF concentration × milk yield); and AF transfer from feed to milk (AF excretion as a percentage of AF intake). All changes were expressed as percentages and calculated relative to the control group which defined zero change. Four of the eight additives resulted in significant reductions (P < 0.05) in milk AF concentration, secretion, and AF transfer ranging from 34.98-40.39%, 36.36-52.28%, and 34.45-48.44%, respectively. Dry matter intake (DMI) was significantly reduced (P < 0.001) by the consumption of AF, while milk production was not affected during the same time period. Neither DMI nor milk production were affected by the addition of treatment products to the diet when compared to control (P > 0.05).
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Mang'oli, Wellington Sifuna. "Effects of Fermenten during the dry and early lactation periods of dairy cows." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=706.

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Thesis (M.S.)--West Virginia University, 1999.
Title from document title page. Document formatted into pages; contains ix, 82 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 55-63).
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Abubakar, M. M. "The influence of dietary concentrate energy source and antibiotic feed additives on dairy cow performance." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380204.

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Levital, Tamir. "Effects of a propionic acid-based additive on short-term ensiling characteristics of corn and on dairy cows performance." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101601.

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Forage shortage may force producers to feed unfermented or partially fermented forages, which are more susceptible to aerobic deterioration. Propionic acid-based additives can be added to ensiled forages to inhibit yeast and mold growth, and improve the aerobic stability of silages. The objectives of this study were to determine the effects of a propionic acid-based silage additive (Solution Foin) on ensiling characteristics, aerobic stability and feeding value of short-term ensiled corn forage. Chopped whole corn was left untreated or treated with Solution Foin (contains 700 g kg-1 propionic acid and 300 g kg-1 NH4OH). The additive was added to forage prior ensiling at a rate of 5 L ton-1 (wet basis). Treated and untreated forages were placed in six plastic silo bags (three each). Silo bags were opened one day after ensiling and daily samples were collected for 30 consecutive days. Effects on animal performance of feeding treated or untreated forage were determined in a completely randomized design, using 30 lactating cows (178+/-55 days in milk) fed total mixed ration (50:50 forage: concentrate) with the major forage portion consisting of untreated or treated forage. The feeding study started one day post-ensiling. Results showed that Solution Foin reduced (P < 0.05) yeast and mold populations between d 5 and 14 post-ensiling. The highest differences (P < 0.002) were observed on d 10, at which point yeast and mold populations for untreated silage were 7.86 and 2.51 log cfu g-1, respectively. The corresponding values for treated silage were 4.35 and 0.00 log cfu g-1, respectively. Aerobic stability of treated ensiled forage was also improved (P < 0.01) from day 0 (by 159 h) to day 10 (by 33 h) post-ensiling. Solution Foin also increased (P < 0.05) the overall lactic acid and WSC content, and lowered the temperature of the treated ensiled forage in the field. No treatment differences were detected in the forage pH and acetic acid concentration. Dairy cows fed treated forage had similar feed intake (average 23 kg d-1) and milk yield (average 29 kg d-1) to cows fed the untreated forage. It was concluded that Solution Foin can be used to improve the aerobic stability and ensiled forage characteristics of short-term corn forage, likely by reducing yeast and mold populations.
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Rondahl, Tomas. "Whole-crop pea-oat silages in dairy production : effects of maturity stage and conservation strategy on fermentation, protein quality, feed intake and milk production /." Umeå : Dept. of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/2007112.pdf.

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Carmo, Carolina de Almeida. "Grau de moagem do milho, inclusão de subprodutos agroindustriais e aditivo microbiológico em rações para vacas leiteiras." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-09082005-125013/.

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Foram realizados três experimentos para avaliar o grau de moagem do milho, sua substituição por subprodutos agroindustriais e o fornecimento de aditivos microbiológicos em rações para vacas leiteiras recebendo silagem de milho como volumoso. Experimento 1: Foram utilizadas trinta e seis vacas da raça Holandesa (330 DEL) para avaliar o fornecimento de aditivo microbiológico (Levucell SC20 da Lallemand Animal Nutrition) em rações com ou sem substituição parcial (50%) de milho finamente moído por polpa cítrica. Foi utilizado delineamento em Quadrados Latinos 4x4 repetidos. A ingestão de matéria seca, produção e composição do leite e teor de glicose plasmática não foram afetadas (P>0,05) pelos tratamentos. O nitrogênio uréico no leite foi maior (P<0,05) nos animais que receberam aditivo microbiológico. O nitrogênio uréico no plasma foi reduzido pela substituição parcial do milho pela polpa cítrica (P<0,05). A substituição parcial do milho por polpa cítrica não teve efeito negativo sobre o desempenho de vacas produzindo em média 19 kg/d de leite. Experimento 2: Foram utilizadas vinte e oito vacas da raça Holandesa (230 DEL) para avaliar os efeitos de vários teores de amido na matéria seca da ração sobre o desempenho lactacional dos animais. O teor de amido variou através da substituição do milho moído fino pela polpa cítrica. Os tratamentos foram: 15% (AM15), 20% (AM20), 25% (AM25) e 30% de amido (AM30). Foi utilizado delineamento em Quadrados Latinos 4x4 repetidos. As produções de leite foram 27,94; 29,17; 31,11 e 29,64 kg/d para os tratamentos AM15, AM20, AM25 e AM30, respectivamente, apresentando efeito cúbico significativo (P<0,05). Para produção de gordura, proteína, lactose e sólidos totais do leite também houve efeito cúbico (P<0,05). Para teor de proteína, sólidos totais e nitrogênio uréico no leite houve efeito linear (P<0,05). Não houve efeito dos tratamentos sobre teor de gordura do leite e glicose e nitrogênio uréico plasmáticos (P>0,05). Vacas produzindo em torno de 30 kg/d apresentaram melhor desempenho quando alimentadas com rações contendo 25% de amido, não havendo vantagem no fornecimento de rações com teor de amido de 30%. Experimento 3: Foram utilizadas trinta e duas vacas da raça Holandesa (160 DEL) para comparar o grau de moagem do milho (fino ou grosso) em combinação com polpa cítrica peletizada ou casca de soja nas rações. Os tratamentos foram: milho moído fino + polpa cítrica (MFPC), milho moído grosso + polpa cítrica (MGPC), milho moído fino + casca de soja (MFCS), milho moído grosso + casca de soja (MGCS). Foi utilizado delineamento em Quadrados Latinos 4x4 repetidos. A ingestão de matéria seca, produção de leite, teores de gordura, proteína e lactose do leite, glicose e nitrogênio uréico plasmáticos não foram afetados pelos tratamentos (P>0,05). Houve efeito significativo da interação grau de moagem versus tipo de subproduto (P<0,05) para produção de leite corrigido para gordura, produção de gordura e de sólidos totais do leite. O grau de moagem do milho e o tipo de subproduto não afetaram o desempenho de vacas leiteiras com produção ao redor de 24 kg/d.
Three experiments were conducted to assess the effects of corn grain grinding, byproducts and yeast culture supplementation in dairy cow rations containing corn silage as forage. Experiment 1: Thirty six lactating Holstein cows (330 days in milk - DIM) were used to study the supplementation of yeast culture (Levucell SC20 – Lallemand Animal Nutrition) in dairy rations with partial (50%) replacement of finely ground corn by dried citrus pulp. A repeated 4x4 Latin Square design was used. Dry matter intake, milk yield and composition and plasma glucose were not affected (P>0,05) by treatments. Milk urea nitrogen was raised by yeast culture supplementation (P<0,05). Plasma urea nitrogen was reduced by feeding citrus pulp in partial replacement of corn (P<0,05). The partial replacement of finely ground corn by dried citrus pulp did not affect the cows performance with 19 kg/d milk yield. Experiment 2: Twenty eight lactating Holstein cows (230 DIM) were used to evaluate the effects on performance of varying contents of starch in the ration. Starch contents was varied by replacing fine ground corn by dried citrus pulp. Treatments were: 15% (AM15), 20% (AM20), 25% (AM25) e 30% of starch (AM30) in the ration dry matter. A repeated 4x4 Latin Square design was used. Milk yield was 27,94; 29,17; 31,11 e 29,64 kg/d for treatments AM15, AM20, AM25 and AM30, respectively, with cubic effect (P<0,05). Milk fat, protein, lactose and total solids yield were affected cubically (P<0,05). Linear effects were detected for protein, total solids and milk urea nitrogen contents (P<0,05). Milk fat contents, plasma urea nitrogen and glucose were not affected by treatments (P>0.05). Cows producing about 30 kg/d got better performance when fed with rations 25% starch contents. Did not have advantage by supplying 30% starch contents rations. Trial 3: Thirty two mid lactating Holstein cows (160 DIM) were used to study the effects on performance of corn grain grinding (coarse or fine) and its combination with dried citrus pulp or soy hulls. A repeated 4x4 Latin Square design was used. The treatments were: fine ground corn + citrus pulp (MFPC), coarse ground corn + citrus pulp (MGPC), fine ground corn + soy hulls (MFCS), coarse ground corn + soy hulls (MGCS). Treatments did not affect DMI, milk yield, milk fat, protein and lactose contents, plasma urea N and glucose (P>0.05). The interaction corn grain grinding and byproduct source was significative for fat corrected milk, fat and total solids yield (P<0,05). Corn grain grinding and byproduct variety did not affect the cows performance with 24 kg/d milk yield.
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Olofsson, Jan. "Feed availability and its effects on intake, production and behaviour in dairy cows /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5752-1.pdf.

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Khalaf, Sadi Shalan. "Utilization of wheat straw in rations for lactating dairy cows." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184287.

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An experiment involving three feeding trials was conducted to study the effect of substituting chopped wheat straw for alfalfa in diets for lactating dairy cows. The results of these trials have shown that in complete mixed diets or diets containing long alfalfa hay, replacement of half of the alfalfa in rations containing 45% roughage for lactating dairy cows with chopped wheat straw does not adversely affect DM intake or milk yield and increase milk fat percentage. Replacing half of the long alfalfa with chopped alfalfa also apparently improved lactational performance although not as dramatically as that of chopped straw. Ammoniation of wheat straw did not improve the performance response by lactating cows. Inclusion of chopped straw in the diets seemed to enhance the efficiency of milk production. Higher ruminal acetate:propionate ratios and increased digestibility of ether extract resulted from feeding straw. Digestibility of other nutrients were generally either not affected or were depressed by straw feeding. Increasing the chopped wheat straw level to 75% of the roughage resulted in lower DM intake and milk yield and negative body weight gains but higher milk fat levels. It did not appear that maintenance of constant ADF level in a dairy ration regardless of roughage level was the solution to the maintenance of milk fat levels. Thus it has been indicated that under the conditions of this experiment a combination of chopped alfalfa and wheat straw can be used successfully in complete mixed rations for high producing dairy cows. For the most part all productive parameters measured were improved by the addition of straw and by the feeding of complete mixed diets. This was especially true for milk fat which, from a dairyman's viewpoint, is very important because of its impact on milk pricing. It would also have a direct bearing on management by reducing labor costs through elimination of labor intensive handling of long alfalfa. Mechanical handling of complete mixed rations is relatively easier and cheaper.
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Yoder, Peter S. "Effects of Forage Quality Variation on Lactating Dairy Cows." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354591535.

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Muya, Claude Mukengela. "Effects of virginiamycin and monensin of milk production efficiency and blood metabolites in Holstein cows." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-08202008-121518.

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Books on the topic "Feed additives for dairy cows"

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Moran, John. Feedpads for grazing dairy cows. Collingwood, Vic: CSIRO Publishing, 2010.

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Bourke, Michael J. Evaluation of the Feeding Value of Maize Silage and Grass Silage for Dairy Cows. Dublin: University College Dublin, 1998.

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Ryan, Thomas Michael Gerard. Strategies for the Feeding and Management of Dairy Cows for both Seasonal and Non-seasonal Milk Production Systems in Ireland. Dublin: University College Dublin, 1998.

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Carlsson, Jonas. The value of the concentration of urea in milk as an indicator of the nutritional value of diets for dairy cows, and its relationships with milk production and fertility. Uppsala: Sveriges Lantbruksuniversitet, 1994.

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Buckley, Frank Timothy Anthony. Effect of Genotype of Cow and System of Feeding on Milk Production, Feed Intake and Nutrient Utilisation of Spring-calving Holstein-Friesian Dairy Cows in Ireland. Dublin: University College Dublin, 1998.

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National Animal Health Monitoring System (U.S.) and United States. Animal and Plant Health Inspection Service. Veterinary Services., eds. Use of nutritional supplements & feed additives in dairy heifers: National Dairy Heifer Evaluation Project. Fort Collins, Colo: U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, 1993.

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Feed into milk: A new applied feeding system for dairy cows : an advisory manual. Nottingham University Press: Nottingham, United Kingdom, 2004.

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Moran, John. Tropical Dairy Farming. CSIRO Publishing, 2005. http://dx.doi.org/10.1071/9780643093133.

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Tropical Dairy Farming is a manual designed for use by dairy production advisors working in tropical areas, especially in South-East Asia. It aims to increase the productivity of small holder dairy farmers in the humid tropics by improving the feeding management of their livestock. It shows how to provide dairy cows with cost-effective feeds that match small holder farming systems and discusses the major obstacles to improving feeding management in the humid tropics. The author shows the benefits and drawbacks of various feed components and the calculation of balanced diets based mainly on forages combined with some supplementary feeding. Diseases and problems associated with unbalanced diets are also covered, as well as important information on growing and conserving quality forages as silage. The book draws on examples from a variety of countries including Indonesia, Malaysia, Thailand, Vietnam, China, East Timor and the Philippines.
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Moran, John. Rearing Young Stock on Tropical Dairy Farms in Asia. CSIRO Publishing, 2012. http://dx.doi.org/10.1071/9780643107915.

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Rearing young stock for replacement heifers is probably one of the least well understood and practised aspects of herd and feeding management on dairy farms throughout the world, particularly on small holder dairy farms in the tropics. This book addresses all the major concerns of the small holder dairy farmer in Asia. It shows how to attain optimal growth in young stock, so that as cows, they can calve at an appropriate early age at the lowest cost and promptly substitute for any cows culled from the milking herd. This provides continuing returns on the investments of feed, labour and other farm resources. Low reproductive rates and high calf mortality are the major causes of reproductive wastage. This has a direct bearing on culling and replacement strategies and on genetic improvement. In many tropical countries, calf mortality can be as high as 50%. In some areas this can be due to climatic stress on temperate or crossbred stock. While climatic stress compounds the other hazards of calf life, high calf mortality is usually due to diseases and poor feeding management. Rearing Young Stock on Tropical Dairy Farms in Asia encourages the small holder dairy farmer to maintain their investment in replacement heifers and gives them the tools necessary to achieve realistic targets for mortalities, live weight gain, mating age, and age and live weight at first calving. It is a companion volume to three previous manuals written by John Moran: Tropical Dairy Farming, Business Management for Tropical Dairy Farmers and Managing High Grade Dairy Cows in the Tropics.
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Book chapters on the topic "Feed additives for dairy cows"

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Mizrahi, Itzhak. "The Role of the Rumen Microbiota in Determining the Feed Efficiency of Dairy Cows." In Beneficial Microorganisms in Multicellular Life Forms, 203–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21680-0_14.

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Gross, J. J., H. A. van Dorland, R. M. Bruckmaier, and F. J. Schwarz. "Milk fatty acid profile in dairy cows during a negative energy balance in early lactation and feed-restriction in mid-lactation." In Energy and protein metabolism and nutrition in sustainable animal production, 361–62. Wageningen: Wageningen Academic Publishers, 2013. http://dx.doi.org/10.3920/978-90-8686-781-3_125.

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Caroprese, Mariangela, Maria Giovanna Ciliberti, and Marzia Albenzio. "Application of aromatic plants and their extracts in dairy animals." In Feed Additives, 261–77. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-814700-9.00015-7.

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Butler, O. D. "Regulation of Agricultural Chemicals, Growth Promotants, and Feed Additives." In Dairy Science Handbook, 83–88. CRC Press, 2019. http://dx.doi.org/10.1201/9780429049361-11.

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M., Janzekovic, Rozman C., Pazek K., and Pevec P. "Mathematical Model for Balancing Feed Rations in Dairy Cows." In DAAAM International Scientific Book 2014, 153–62. DAAAM International Vienna, 2014. http://dx.doi.org/10.2507/daaam.scibook.2014.12.

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DeVries, T. J. "Ensuring access to feed to optimize health and production of dairy cows." In Large Dairy Herd Management, 787–98. American Dairy Science Association, 2017. http://dx.doi.org/10.3168/ldhm.0857.

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Sidorov, A. A., M. F. Grigoryev, and A. I. Grigorjeva. "THE EFFICIENCY OF NONTRADITIONAL FEED ADDITIVES IN HORSE FEEDING." In Actual issues of the dairy industry, intersectoral technologies and quality management systems, 492–96. All-Russian Dairy Research Institute, 2020. http://dx.doi.org/10.37442/978-5-6043854-1-8-2020-1-492-496.

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Cook, Nigel B. "Developments in housing of cattle to promote health and welfare." In Understanding the behaviour and improving the welfare of dairy cattle, 143–62. Burleigh Dodds Science Publishing, 2021. http://dx.doi.org/10.19103/as.2020.0084.08.

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While housing systems have served to provide shelter and protection from predation, they have also been associated with negative effects on cow health and welfare. Efforts in the dairy sector have had significant impact on transition cow housing, feeding and resting behaviors, and protection from climate extremes. While consumers of dairy products continue to demand that cows graze pasture, cows appear to value the benefits of housing. Well-designed freestall housing, with comfortable deep bedded stalls, sized to the animals using them, in pens that promote feed access for all of the cows to eat simultaneously, within barns designed to protect the cows from extremes of climate, have proven that we can house cattle successfully. The cow continues to live within a complex hierarchical social system within these buildings, and it is incumbent on our designs to allow cows to exhibit a wide range of natural behaviors to enhance their well-being.
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CHAMBERLAIN, D. G., P. A. MARTIN, and S. ROBERTSON. "OPTIMIZING COMPOUND FEED USE IN DAIRY COWS WITH HIGH INTAKES OF SILAGE." In Recent Advances in Animal Nutrition, 175–93. Elsevier, 1989. http://dx.doi.org/10.1016/b978-0-408-04149-2.50013-1.

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Kalebich, Caroline C., and Felipe C. Cardoso. "Effects of Direct-Fed Microbials on Feed Intake, Milk Yield, Milk Composition, Feed Conversion, and Health Condition of Dairy Cows." In Nutrients in Dairy and their Implications on Health and Disease, 111–21. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-809762-5.00009-7.

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Conference papers on the topic "Feed additives for dairy cows"

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Stefanini, Roberta, Giuseppe Vignali, and Fabio Coloretti. "Modelling the growth kinetic of spoilage microorganisms in a packaged cow’s ricotta processed with high pressure." In The 5th International Food Operations & Processing Simulation Workshop. CAL-TEK srl, 2019. http://dx.doi.org/10.46354/i3m.2019.foodops.003.

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Today consumers demand fresh foods without additives, preservatives and health risks: that is why non-thermal food preservation methods are receiving more interest, among them High Pressure Processing is able to avoid thermal degradation of food components, extend their shelf life and preserve colour, flavour and nutritional value. HPP is often used on dairy products because of its impact on physicochemical and sensory characteristics, its ability to improve their structure and texture and inactivate some microorganisms. The aim of this work is to evaluate the effect of HPP on a packaged ricotta rich in Conjugated Linoleic Acid (CLA) and Omega-3, resulting from cows fed with linseed in the Parmigiano Reggiano area, and processed with a hydrostatic pressure of 600 MPa for 5 minutes. The ultimate goal is to find a mathematical model able to show the treatment’s effect on spoilage microorganisms that grow spontaneously in this product during a month of refrigerated storage.
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Kosolapova, Valentina, Nikolay Buryakov, Andrey Kosolapov, and Olga Mokrushina. "FEATURES OF THE EATING BEHAVIOR OF COWS WHEN USING ENERGY FEED ADDITIVES." In Multifunctional adaptive feed production. ru: Federal Williams Research Center of Forage Production and Agroecology, 2020. http://dx.doi.org/10.33814/mak-2020-22-70-122-127.

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The results of studies on the nutritional behavior of animals when polysaccharides are included in the diet are presented. Establishment of the effect of energy feed supplement on nutritional activity and increase in milk production of cows.
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Kosolapova, Valentina, and Andrey Kosolapov. "ZOOTECHNICAL EVALUATION OF A NEW FEED ADDITIVE." In Multifunctional adaptive feed production. ru: Federal Williams Research Center of Forage Production and Agroecology, 2020. http://dx.doi.org/10.33814/mak-2020-22-70-128-133.

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Федорова, Зинаида, and Zinaida Fedorova. "INFLUENCE OF MINERAL AND VITAMIN PREMIXES ON COD EFFICIENCY DIFFERENT PERIODS OF LACTATION." In Multifunctional adaptive feed production. ru: Federal Williams Research Center of Forage Production and Agroecology, 2019. http://dx.doi.org/10.33814/mak-2019-21-69-104-109.

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The results of the use of the developed two mineral-vitamin premixes in the feeding of dairy cows are given. Their effect on the productivity of animals in different periods of lactation — the first 100 days, 101–200 and 201–305 days and payment for food products.
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Trupa, Aiga, Baiba Osmane, and Liga Proskina. "Fodder beans (Vicia faba minor ) and peas (Pisum sativum) in dairy cows feed rations." In 16th International Scientific Conference Engineering for Rural Development. Latvia University of Agriculture, 2017. http://dx.doi.org/10.22616/erdev2017.16.n125.

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Nicholas M. Holden and Anthony J. Brereton. "Using a grazing simulation model to evaluate the balance of feed demand and intake for high yielding dairy cows in a rotational grazing dairy system." In 2004, Ottawa, Canada August 1 - 4, 2004. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2004. http://dx.doi.org/10.13031/2013.16707.

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Reports on the topic "Feed additives for dairy cows"

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Testroet, Eric D., Mathew R. O'Neil, Andrew L. Mueller, Donald C. Beitz, and Stephanie Clark. Feeding Lactating Holstein Dairy Cows Reduced-Fat Dried Distillers Grains with Solubles: Milk Composition and Feed Efficiency. Ames (Iowa): Iowa State University, January 2017. http://dx.doi.org/10.31274/ans_air-180814-310.

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O'Neil, Mathew R., Mohamed Osman, Eric D. Testroet, Wanda Kreikemeier, Douglas Ware, and Donald C. Beitz. Direct-Fed Microbials Decreases Dry Matter Intake and Increases Feed Efficiency When Fed to Lactating Holstein Dairy Cows. Ames (Iowa): Iowa State University, January 2005. http://dx.doi.org/10.31274/ans_air-180814-1162.

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