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Artículos de revistas sobre el tema "Sows Reproduction"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 30 de enero de 2023

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1

Orcheruata, A. M., A. T. Sphine, and S. O. Nwokoro. "Performance characteristics of sows fed enriched diet from weaning to service in a commercial flock." Nigerian Journal of Animal Production 36, no. 1 (January 1, 2021): 12–19. http://dx.doi.org/10.51791/njap.v36i1.1033.

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Fielded data from 40 sows together with obtained data from 1999 to 2005 we analysed to determine the performance of sows fed enriched diet from weaning to a service in a commercialflock. The data were on litter size at birth (LTZVT), litter size at weaning (LTZWN), weaning age (WNAGE) forrowing interval (FRINT), purity (PRTY) and reproductive life (PRODLF). Mean value of 9.44(no), 6.04(no), 31.874, 453.58d and 3.65yrs were obtained for LTZBT, LTZWN, WNAGE, FRINT and PRODLF respectively. The influence of parity on sow's performance was analyzed while mortality and sows efficiency of production

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2

Wähner, M., and M. Richter. "Influence of cycle stimulation in weaned sows on fertility depend on season." Biotehnologija u stocarstvu 27, no. 3 (2011): 521–31. http://dx.doi.org/10.2298/bah1103521w.

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In summer high temperatures are stress for sows mostly. This situation often affects the reproduction physiology in animals strongly. As a result of that the fertility and reproduction performance of sows can be reduced. High environmental temperatures and especially heat accumulation in body of the animals affect the metabolism in high performance sows. That is important in very sensitive phases in reproduction cycle of sows like heat, pregnancy and lactation. Young sows (gilts and primiparous sows) are more sensitive than older sows. This situation demands zoo- and biotechnical activities ex

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3

Darin, A., I. Kirilkin, and A. Zemskova. "The effectiveness of a night shift when farrowing sows in reproduction farm LLC “Cherkizovo-Svinovodstvo”." Glavnyj zootehnik (Head of Animal Breeding), no. 8 (August 1, 2020): 37–44. http://dx.doi.org/10.33920/sel-03-2008-05.

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The reproductive traits of sows are affected by many factors, so in the practice of work of reproduction farm should take into account the influence of each of the its in order to increase the output of piglets from the breeding stock, especially in industrial pig farms. The safe passage of farrowing has the big influence on the prolificacy of sows, since many piglets die directly during farrowing. Therefore, in modern industrial enterprises that use highly productive hybrid sows it is necessary to constantly monitor the passage of farrowing sows. Researches have been carried out in the reprod

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4

Knecht, Damian, and Anna Jankowska-Mąkosa. "Endoparasites in Sows and Selected Reproduction Parameters." Acta Veterinaria 70, no. 1 (March 1, 2020): 71–80. http://dx.doi.org/10.2478/acve-2020-0005.

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AbstractThe aim of the study was to analyze infection of sows with endoparasites depending on their physiological phase and length of exploitation, as well as to determine the effects of infection on selected parameters of reproductive performance. 300 fecal samples collected from the same 75 sows in 4 phases of the production cycle (dry sows, low pregnancy, high pregnancy, lactation) were tested in the experiment. Species and gender diversity, prevalence, OPG and EPG were determined in the study. These parameters were compared in terms of the physiological phase and the length of exploitation

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5

Rypula, K., A. Kumala, P. Lis, K. Niemczuk, K. Płoneczka-Janeczko, and Z. Pejsak. "Rapid detection of Chlamydia/Chlamydophila group in samples collected from swine herds with and without reproductive disorders." Polish Journal of Veterinary Sciences 17, no. 2 (June 1, 2014): 367–69. http://dx.doi.org/10.2478/pjvs-2014-0052.

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Abstract The study was carried out in seven reproductive herds of pigs. In three of them reproductive disorders were observed. Three herds consisted of 10-50 and four consisted of 120-500 adult sows and they were called small and medium, respectively. Fifty-seven adult sows were randomly selected from herds. Serum samples were tested using the complement fixation test and swabs from both eyes and from the vaginal vestibule were examined using real-time PCR. All serum samples were negative. Infected sows were present in each of the study herds. In total, there were 28 positive samples (53%, 28/

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6

YOUNG, L. G., G. J. KING, J. S. WALTON, I. McMILLAN, M. KLEVORICK, and J. SHAW. "GESTATION ENERGY AND REPRODUCTION IN SOWS OVER FOUR PARITIES." Canadian Journal of Animal Science 70, no. 2 (June 1, 1990): 493–506. http://dx.doi.org/10.4141/cjas90-061.

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One hundred and eighty-seven gilts that conceived at first, second or third estrus after 140 d of age and that had a litter at 21 d post-farrow were fed three gestation energy levels 22.2, 29.2 and 36.2 MJ DE d−1 for four parities to assess the effect of gestation energy level on reproductive performance and longevity. All sows were fed the same lactation diet to appetite twice per day. Gestation energy level did not have a consistent effect on the number of piglets per litter. There was a small linear increase in piglet birth weight as gestation energy level increased. However, piglets from s

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7

van Heugten, Eric. "227 Awardee Talk: Advances in Lipid Nutrition of Modern Sows." Journal of Animal Science 99, Supplement_3 (October 8, 2021): 118–19. http://dx.doi.org/10.1093/jas/skab235.217.

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Abstract The modern lactating sow is a highly productive female capable of producing large quantities of milk to support large, rapidly growing litters. The associated high energy and nutritional demands are challenging to meet, especially during heat stress, when tissue loss is extensive. Supplemental lipids are efficient energy sources with a high energy density and low heat increment associated with digestion and metabolism. Besides serving as concentrated energy sources, unsaturated lipids are important sources of essential fatty acids (EFA; linoleic acid, C18:2n-6; and α-linolenic acid, C

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8

Carrolli, C. M., P. B. Lynch, M. P. Boland, F. H. Austin, and J. F. Roche. "The Effect of Feed Intake on the Reproductive Performance of First Parity Sows." Proceedings of the British Society of Animal Production (1972) 1993 (March 1993): 131. http://dx.doi.org/10.1017/s0308229600024570.

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Thirty to forty per cent of sows in Irish herds are culled annually, one third of which are for reproductive problems such as anoestrus, anovulation and small litter size. Causes of reproductive failure include genetic, nutritional, environmental and behavioural factors. Failure to meet the nutritional requirements of sows during lactation and after weaning results in losses of liveweight and body fat (due to mobilization of body reserves) which can subsequently compromise reproductive performance. Although sows normally exhibit oestrus within one week of weaning, Sterning et al. (1990) observ

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9

Lugarà, Rosamaria, Łukasz Grześkowiak, Jürgen Zentek, Susanne Meese, Michael Kreuzer, and Katrin Giller. "A High-Energy Diet and Spirulina Supplementation during Pre-Gestation, Gestation, and Lactation do Not Affect the Reproductive and Lactational Performance of Primiparous Sows." Animals 12, no. 9 (May 3, 2022): 1171. http://dx.doi.org/10.3390/ani12091171.

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Feeding high-energy (HED) or high-fat diets during gestation and lactation to pigs may help cover the energy requirements of high-prolific sows but may also adversely affect their reproductive performance. The microalga Arthrospira plantensis (Sp), rich in bioactive compounds, has been described to exert beneficial health effects. The present study investigated the effects of HED and Sp intake during gestation and lactation in pigs. Twenty-four primiparous crossbred sows were fed either a HED or a control diet. Half of the sows per group were supplemented with 20 g/day of Sp. Despite a higher

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10

Petrujkic, Tihomir. "New biotechnological procedures in swine reproduction." Veterinarski glasnik 56, no. 1-2 (2002): 111–23. http://dx.doi.org/10.2298/vetgl0202111p.

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New biotechnological procedures and the use of hormones in swine breeding are aimed at increasing the number of piglets in the litter. In small herds and groups, selected sows with 16 mammary complexes (tits) can yield up to 32 piglets, or porkers, per year per sow. In order to achieve such reproduction results, special, individual stalls for sow deliveries are used, in addition to biotechnological methods, with a warm core and floor heating, phased diet and clean facilities. The ovulation value in swine is determined by their genetic and paragenetic effects, and it is often provoked and incre

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11

Akimov, Oleksandr, Irina Martinuk, Oleksandr Tsereniuk, and U. Chereuta. "PLANNING DECISIONS OF RECONSTRUCTION WORK IN PIG REPRODUCTION USING ARTIFICIAL INSEMINATION." Scientific and Technical Bulletin of the Institute of Animal Science NAAS of Ukraine, no. 127 (2022): 59–69. http://dx.doi.org/10.32900/2312-8402-2022-127-59-69.

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Commodity production of pork in GO «GF «Gontarivka» IT NAAS» was based on the use of four premises using a flow system with uneven groups each year. Using current technology, the production cycle was 5.5 to 9.5 months (average sow farrowing ranges 1.26-2.18 per year): four months of idle and growing periods and one and a half months of suckling period. This approach to the reproduction of livestock has led to overconsumption of feed for breeding stock, problems with the reproductive system in some animals and an increase in the total production cost. To improve the system of pig reproduction,

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12

Khalak, Victor, Oleksandr Tsereniuk, Ludmila Gryshyna, and Mariia Ilchenko. "Reproductive qualities and the level of their phenotypical consolidation in sows of different operational value." Pig breeding the interdepartmental subject scientific digest, no. 75-76 (December 7, 2021): 9–19. http://dx.doi.org/10.37143/0371-4365-2021-75-76-01.

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The results of studies of indicators of reproductive qualities of sows of different operational value, the level of their phenotypic consolidation are presented, and the economic efficiency of using sows in experimental groups is calculated. The experimental part of the research was carried out in LLC "Druzhba-Kaznacheevka" in the Dnepropetrovsk region and in the laboratory animal husbandry of the State Institution "Institute of Grain Crops of the NAAS of Ukraine". The work was carried out according to the program of scientific research of NAAS No. 31 "Genetic improvement of farm animals, thei

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13

Hoving, L. L., N. M. Soede, E. A. M. Graat, H. Feitsma, and B. Kemp. "Reproductive performance of second parity sows: Relations with subsequent reproduction." Livestock Science 140, no. 1-3 (September 2011): 124–30. http://dx.doi.org/10.1016/j.livsci.2011.02.019.

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14

Whittemore, C. T. "Nutrition reproduction interactions in primiparous sows." Livestock Production Science 46, no. 2 (August 1996): 65–83. http://dx.doi.org/10.1016/0301-6226(96)00019-x.

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15

Hanczakowska, Ewa, Karol Węglarzy, and Małgorzata Bereza. "Effectiveness of Rapeseed Press Cake (RPC) in Sow Feeding in Two Reproduction Cycles." Annals of Animal Science 12, no. 1 (November 1, 2012): 95–104. http://dx.doi.org/10.2478/v10220-012-0008-4.

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Effectiveness of Rapeseed Press Cake (RPC) in Sow Feeding in Two Reproduction CyclesThe possibility of replacing soybean meal with rapeseed press cake (RPC) in feed was determined over two reproductive cycles in an experiment with 54 pregnant and lactating sows allocated to three groups with 18 gilts per group. Group I received the standard mixture, group II received RPC as the main protein source from insemination to 100 days of pregnancy, and the control diet during late pregnancy and lactation. In group III, RPC replaced all of soybean meal protein in early pregnancy and one-half of soybean

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16

Kramarenko, S. S., S. I. Lugovoy, A. V. Lykhach, A. S. Kramarenko, V. Ya Lykhach, and A. A. Slobodianyk. "Effect of genetic and non-genetic factors on the reproduction traits in Ukrainian Meat sows." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 21, no. 90 (April 26, 2019): 3–8. http://dx.doi.org/10.32718/nvlvet-a9001.

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Purebred Ukrainian Meat (UM) breed pigs, which came from Limited Liability Company “Tavriyskie Svin'I” herd located in Skadovsky district (Kherson region, Ukraine), were studied. The reproduction traits investigated were total number of piglets born (TNB), number of piglets born alive (NBA), frequency of stillborn piglets (FSB), number of weaned piglets (NW), total weaning weight of litter (TWWL) and average piglet weaning weight (APWW) for sows farrowing between 2006 and 2012. The analysis covered reproductive characteristics of 49 sows in the first nine parities (n = 457 litters). The sows o

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17

Pu, Qiang, Jie Chai, Li Chen, Changbao Liu, Changfeng Yang, Yongfu Huang, and Jia Luo. "Exosome miRNA Expression in Umbilical Cord Blood of High-Parity Sows Regulates Their Reproductive Potential." Animals 12, no. 18 (September 16, 2022): 2456. http://dx.doi.org/10.3390/ani12182456.

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The objective of modern pig breeding is to improve the genetic reproduction performance potential of sows, including the litter size and weight of piglets. During the gestation period, the umbilical cord facilitates placenta–fetal communication; thus, it plays an indispensable role in intrauterine embryonic development and fitness. Herein, we analyzed the molecular mechanism in declining reproductive potential in high-parity sows by assessing the changes in the umbilical cord blood. Firstly, we analyzed the reproductive characteristics data of sows, followed by histological analysis of the umb

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18

Krasnova, О. А., Е. V. Khardina та N. А. Sannikova. "СOMPARATIVE ANALYSIS OF DIFFERENT SOW FAMILIES ACCORDING TO REPRODUCTIVE QUALITIES". Vestnik of Ulyanovsk state agricultural academy, № 3(50) (8 вересня 2020): 173–78. http://dx.doi.org/10.18286/1816-4501-2020-3-173-178.

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Scientific-economical experiment was carried out on evaluation of sow reproductive qualities of different families obtained and grown in LLC «Kigbayevsky bacon» of Sarapul district of Udmurt Republic and sows, bought in LLC «Otrada gen» of Lipetsk region. Analyzing reproduction of breeding stock of home selection, according to the first farrow it can be said that the most multiple lambing is observed in sows of Otrada family (new selection) – 15,72 heads. Out of home selection sows families Osobaya (13,33 heads), Reklama (12,3 heads) can be noticed. The worst multiple lambing was noticed at so

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19

Polozyuk, Olga Nikolaevna, and Evgeniy Sergeevich Polozyuk. "EFFECT OF PROBIOTICS ON REPRODUCTION FUNCTION OF BREEDING SOWS." Agrarian Scientific Journal, no. 7 (July 30, 2020): 55–56. http://dx.doi.org/10.28983/asj.y2020i7pp55-56.

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The results of studies on the effectiveness of use in the diets of pregnant and sucking sows probiotic based on bacteria Bacillus strains bacillus B. subtillus and B. amyloliquefaciens are presented. The use of the probiotic had a positive effect on the reproductive qualities of sows, which allowed increasing the milkiness of sows of the experimental group by 24.1% compared to the analogues of the control group. The comprehensive indicator of reproductive qualities of breeding sows of the experimental group were higher than in the control by 16.8 points. The weight of the piglet's nest at wean

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20

Daryin, A. I., N. N. Kerdyashov, A. A. Busov, and E. A. Zykina. "Influence of technological factors on the reproductive performance of sows in an industrial breeder." IOP Conference Series: Earth and Environmental Science 953, no. 1 (January 1, 2022): 012015. http://dx.doi.org/10.1088/1755-1315/953/1/012015.

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Abstract The most important element of pork production technology is herd reproduction. Among all reproductive qualities of sows, the most important are prolificacy, heavy litter, and preservation of piglets during the suckling period. Therefore, the study of reproductive qualities of pigs is relevant to the theory and practice of pig breeding. The research was carried out under reproductive conditions in an industrial pig breeding complex. It is noted that the greatest increase in sows prolificacy is observed when the service-period is 21-28 days, i.e. when one heat is skipped, as compared to

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Kashirina, Lydia, Vitaly Kulakov, Elman Saitkhanov, and Sergey Denikin. "The influence of nanosized iron particles on morphological parameters of blood and reproductive ability of sows in the third trimester of gestation." E3S Web of Conferences 285 (2021): 04011. http://dx.doi.org/10.1051/e3sconf/202128504011.

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The article presents the results of experimental studies on the use of nanosized iron powder in the third trimester of gestation on the reproduction processes of sows. The studies were carried out in the conditions of the farm. The physiological state of pregnant sows was determined by hematological parameters. It was found that iron NRP contributed to an increase in the number of red blood cells and hemoglobin in the blood of sows, compared with the control 20 days before farrowing, the content of red blood cells in the blood of experimental sows was 6.3% significantly higher compared to the

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Varley, M. A., and T. Atkinson. "Weaning at birth: the effect on the reproduction of the sow." Animal Science 41, no. 3 (December 1985): 375–82. http://dx.doi.org/10.1017/s0003356100036448.

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AbstractThirty-six Landrace × Large White sows were allocated at random to one of three treatment groups. Sows on treatment A (no. = 6) did not lactate at all and the piglets from these sows were removed at birth. Sows on treatment B (no. = 15) lactated for 1 day after parturition and sows on treatment C (no. = 15) acted as controls and lactated for 42 days. The reproductive performance of each treatment group was recorded and all sows were bled every 2nd day from parturition to 30 days post partum. All blood samples were assessed for oestradiol-17β and progesterone concentrations. In treatmen

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Darin, A., and A. Busov. "Live weight and livability of piglets received from sows with different duration of open days period and lactation." Glavnyj zootehnik (Head of Animal Breeding), no. 7 (July 1, 2020): 50–58. http://dx.doi.org/10.33920/sel-03-2007-06.

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The most important element of pork production technology is the reproduction of the herd. Among all the reproductive traits of sows, there is a special emphasis on the heavy litter or live weight of piglets at birth, which largely determines the growth rate of young animals in further age periods. The livability of piglets ultimately determines how many young pigs will come to fattening and how much pork will be obtained. Therefore, the study of the reproductive traits of pigs is relevant for the theory and practice of pig breeding. The researches have been carried out under the environments o

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DeRouchey, Joel M., Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth, Steve S. Dritz, and Mariana Boscato Menegat. "27 Defining a robust sow: swine nutrition perspective on reproduction and lactation." Journal of Animal Science 97, Supplement_2 (July 2019): 13. http://dx.doi.org/10.1093/jas/skz122.023.

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Abstract Improvements in modern sow prolificacy have markedly increased the number of pigs weaned, thus the ability of sows to provide nutrients to support fetal growth and milk production has been enhanced. The goals of the gestation nutrition program consist of meeting the nutrient requirements for maintenance and growth and for adequate conceptus development, while managing body condition. Early gestation represents the best opportunity for replenishing body reserves, whereas in late gestation, both estimated protein deposition and energy requirement are exponentially increased and directed

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Nguyen, N. H., C. P. McPhee, and C. M. Wade. "Genetic variation and responses in reproductive performance of sows in lines selected for growth rate under restricted feeding." Animal Science 82, no. 1 (February 2006): 7–12. http://dx.doi.org/10.1079/asc20052.

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AbstractThe objective of this study was to examine genetic changes in reproduction traits in sows (total number born (TNB), number born alive (NBA), average piglet birth weight (ABW) and number of piglets weaned (NW), body weight prior to mating (MW), gestation length (GL) and daily food intake during lactation (DFI)) in lines of Large White pigs divergently selected over 4 years for high and low post-weaning growth rate on a restricted ration. Heritabilities and repeatabilities of the reproduction traits were also determined. The analyses were carried out on 913 litter records using average i

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Humpolíček, P., T. Urban, and P. `. Horák. "Influence of <i>ESR1</i>L and <i>FSHB</i> genes on litter size in Czech Large White sows (short communication)." Archives Animal Breeding 49, no. 2 (October 10, 2006): 152–57. http://dx.doi.org/10.5194/aab-49-152-2006.

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Abstract. The effects of the candidate genes for reproduction, the estrogen receptor gene (ESR1) and the follicle-stimulating hormone beta subunit gene (FSHB), on the performance of Large White sows in the three different herds have been examined. A total number of 271 sows (in case of the ESR1 gene) and 171 sows (in case of the FSHB gene) were genotyped with PCR-RFLP method and analysed to determine whether polymorphisms of the genes influence the efficiency of Large White sows. The influence of these genes in the first, the first to the fourth and the second to the fourth litters was investi

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Wierzchowska, Agata, Anita Kołodziej-Skalska, Dorota Napierała, Maria Kawęcka, and Eugenia Jacyno. "The association of leptin gene polymorphism with reproductive usefulness and selected blood biochemical indicators of hybrid sows (Polish Large White × Polish Landrace)." Acta Veterinaria Brno 81, no. 4 (2012): 333–37. http://dx.doi.org/10.2754/avb201281040333.

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Rapid developments in the field of molecular genetics have led to new possibilities to identify polymorphic genes and to detect quantitative trait loci with major effects on economically important reproduction traits. Our study has defined the influence of polymorphism at position 3469 of the leptin gene on reproductive performance in sows as well as on selected blood biochemical indices in pregnant sows The research involved 173 multiparous sows after the second and third farrowing, crossbreds of Polish Large White and Polish Landrace breeds. The collected data on reproductive performance of

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Nevrkla, Pavel, Zdeněk Hadaš, and Pavel Horký. "Effect of Minimal Disease in a Herd on Reproductive Parameters of Sows." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 65, no. 4 (2017): 1247–51. http://dx.doi.org/10.11118/actaun201765041247.

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The aim of this study was evaluation of reproductive performance in sows from herds with minimal disease. Total number of 40 sows were included in the observation and evaluated from the 1st to the 4th parity. The highest reproductive performance was recorded at the 3rd parity. Statistically significant difference (P < 0.05) was found between the 1st and the 3rd parity and highly statistically significant difference (P < 0.01) was recorded between the 2nd and the 3rd parity in number of live‑born piglets. Comparison of numbers of stillborn piglets showed statistically significant differen

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Knights, T. E. N., R. R. Grandhi, and S. K. Baidoo. "Interactive effects of selection for lower backfat and dietary pyridoxine levels on reproduction, and nutrient metabolism during the gestation period in Yorkshire and Hampshire sows." Canadian Journal of Animal Science 78, no. 2 (June 1, 1998): 167–73. http://dx.doi.org/10.4141/a96-116.

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Two experiments were conducted to determine the interactive effects of selection for lower backfat over six generations, and two dietary supplemental pyridoxine levels (1.0 vs. 15.0 ppm) on sow reproductive performance and nutrient metabolism in second-parity Yorkshire and Hampshire sows. Feeding increased pyridoxine at 16.0 vs. 2.6 ppm from day of weaning through gestation did not improve (P > 0.05) the sow reproductive performance in experiment 1 (N = 32) or 2 (N = 66). In exp. 2, feeding increased pyridoxine reduced the weaning to estrus interval (4.6 vs. 5.7 d, P = 0.11). It also increa

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BOGDAN, Liviu Marian, Sidonia BOGDAN, Flavia RUXANDA, Vasile RUS, Bianca MATOSZ, and Viorel MICLAUS. "Implication of Utilizing Phytoestrogens Infested Fodder on Fertility and Histological Structure of Ovaries and Oviduct in Sow." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Veterinary Medicine 74, no. 1 (May 18, 2017): 35. http://dx.doi.org/10.15835/buasvmcn-vm:12470.

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Reproductive efficiency is an essential requirement for the profitability of swine farms and the quality of fodder can have a negative impact on this aspect. We carried out investigations regarding the influence of fodder quality on reproductive efficiency and the histological structure of the ovary and oviduct in 45 sows from a farm in Bihor county. We observed that corn utilized in feeding the sows was stored in inadequate conditions which allowed the development of moulds. The combined fodder, resulted after grinding the cereals, was stored directly on the concrete floor in inappropriate ar

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Feng, Tao, Linli Xiao, Jiahua Bai, Hongxiang Ding, Liyan Pang, Yuqing Song, Yusheng Qin, Xiaoling Xu, Jing Wang, and Yan Liu. "N-Carbamylglutamate Improves Reproductive Performance and Alters Fecal Microbiota and Serum Metabolites of Primiparous Sows during Gestation after Fixed-Time Artificial Insemination." Biology 11, no. 10 (September 30, 2022): 1432. http://dx.doi.org/10.3390/biology11101432.

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N-carbamylglutamate (NCG) supplementation during gestation improves reproductive performance in sows after conventional artificial insemination. However, whether NCG can improve reproductive performance and change fecal microbiota and serum metabolite levels during pregnancy in sows after fixed-time artificial insemination (FTAI) remains unclear. Two hundred multiparous sows were assigned a diet from mating until farrowing: control (corn–soybean meal) or NCG supplementation (0.05% NCG). At days 30, 70, and 110 of gestation and after farrowing, maternal microbial diversity and serum metabolites

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Khalak, V. I. "Life expectancy and productivity of sows of different types of adaptation." Animal Husbandry of the Steppe of Ukraine 1, no. 2 (November 18, 2022): 124–31. http://dx.doi.org/10.31867/2786-6750.1.2.2022.124-131.

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The paper presents the results of studies of life expectancy and reproductive qualities of sows of plus-adaptive, modal and minus-adaptive types of adaptation, the criteria for the selection of highly productive animals according to the index "pig-uterus adaptation type (TASv) (methodology of the author of the article) is determined, the economic efficiency of the use of animals in experimental groups is calculated The research was carried out in the agricultural formations of the Dnipropetrovsk region and the laboratory of animal husbandry of the State University "Institute of Grain Crops of

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Gilleland, Carson, Zack Peppmeier, and Mark Knauer. "Impact of Sow Transition Diet and Genetic Line on Sow Reproduction Under Heat Stress Conditions." Journal of Animal Science 99, Supplement_2 (May 1, 2021): 3–4. http://dx.doi.org/10.1093/jas/skab096.003.

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Abstract The objective was to evaluate a sow transition diet and genetic line for farrowing duration and sow lactation characteristics. One batch of second parity sows (n = 78) were farrowed at the NCDA Tidewater Research Station in July. Sows consisted of two genetic lines, one selected since 2012 for young age at puberty and the other selected for old age at puberty. From day 109 of gestation until day 3 of lactation, sows were fed either 2.73 kg of a corn-soy lactation diet (3322 Kcal ME/kg, 0.99% SID lysine) once per day or 1.36 kg twice per day of a transition diet (3489 Kcal/kg, 0.71 SID

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34

Matoušek, V., A. Čermáková, N. Kernerová, and P. Králová. "Analysis of prolificacy in sows of hyperprolific lines of Large White breed." Czech Journal of Animal Science 50, No. 4 (December 6, 2011): 155–62. http://dx.doi.org/10.17221/4009-cjas.

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The objective of the paper was to evaluate the results of reproductive performance of sows in some elite breeding herds of the Large White breed included in experimental herds for the production of hyperprolific lines of dam breeds. The set consisted of 98 sows with the known genotypes of ESR, FSH&acirc; and PRLR genes. The dendrogram shows that on the basis of their genetic outfit the sows can be divided into two clusters. The first cluster can be described as a cluster with marked dominance of HPL sows and the second cluster with marked dominance of the sows of basic herd. The first clus

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Knecht, D., S. Środoń, and K. Duziński. "The impact of season, parity and breed on selected reproductive performance parameters of sows." Archives Animal Breeding 58, no. 1 (March 4, 2015): 49–56. http://dx.doi.org/10.5194/aab-58-49-2015.

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Abstract. The aim of the study was to identify the detailed impact of the season, parity and breed on reproductive performance of sows. The experimental material consisted of 2100 sows, in 3 breed variants: 700 PL, 700 PLW, 700 crossbreeds PL × PLW. Sows were observed until parity 5. In the context of the breed, depending on the order of parity groups of 140 sows were isolated. Then, sows were divided in terms of farrowing season into subgroups numbering 35 sows. At the age of 8 months gilts were allocated for reproduction performance. The highest seasonal impact was noted for piglet birth wei

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TYUTYUNNIKOVA, A. V., L. G. YUSHKOVA, I. N. SYCHEVA, and N. M. KERTIEVA. "PREPARATION OF REPAIR PIGS FOR REPRODUCTION IN AN INDUSTRIAL COMPLEX." PIG-BREEDING, no. 1 (2021): 13–15. http://dx.doi.org/10.37925/0039-713x-2021-1-13-15.

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Intensive use of sows in industrial pig breeding complexes requires the preparation of a large number of repair young animals to replace retired sows. The main goal while growing repair pigs in conditions of intensive production is to get strong and healthy animals that have shown good productivity and high operational qualities during the period of economic use. The repair livestock should exceed the breeding stock in its productivity for the gradual replacement of which it is intended.

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Stedman, R. C., and M. A. Varley. "The assessment of sow personality and its effects on reproduction and endocrine status." Proceedings of the British Society of Animal Production (1972) 1991 (March 1991): 57. http://dx.doi.org/10.1017/s0308229600020080.

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Most people believe that it is highly probable that many animals are aware of both themselves and their surroundings. It may follow that a group of sows should not be reared as a homogenous mass because they are individuals each with their own distinguishable characteristics, or in other words each has a personality. It may also be the case that sows having different dispositions may be either more or less susceptible to certain environmental and psychological stressors and these in turn could affect reproductive performance. Hemsworth et al (1981) has found previously that on those farms wher

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Elefson, Sarah, Jason W. Ross, Christopher Rademacher, Steve Pollmann, and Laura L. Greiner. "PSVII-2 Effects of Oxidized Beta-Carotene on Sow Reproduction and Piglet Growth Performance." Journal of Animal Science 100, Supplement_2 (April 12, 2022): 171. http://dx.doi.org/10.1093/jas/skac064.291.

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Abstract As reproductive performance of sows in the commercial U.S. sow herd continues to improve, advancing the impact of gestation and lactation diet supplementation is critical. Beginning on d 60 of gestation through lactation, sows (blocked by parity) were assigned to a standard gestation diet (n = 88), or the standard diet supplemented with 80 ppm OxC-beta (n = 90) provided by Avivagen (Ottawa, ON, Canada) to determine if the supplementation of OxC-beta improves sow reproductive performance, litter growth performance, and alters the abundance of immune cells in sows and piglets. Blood sam

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39

Thacker, P. A. "Effect of high levels of copper or dichlorvos during late gestation and lactation on sow productivity." Canadian Journal of Animal Science 71, no. 1 (March 1, 1991): 227–32. http://dx.doi.org/10.4141/cjas91-025.

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One hundred and eighty-five crossbred (Yorkshire × Landrace) sows of mixed parity were randomly assigned to be fed either a basal diet or the same ration top dressed with either 500 ppm dichlorvos, 250 ppm copper or a combination of these additives. Top dressing was conducted from the time the sows entered the farrowing crate on day 106 of gestation until they were weaned 28 d postpartum. There was no effect of treatment on the number of pigs born alive, born dead or their birthweight. However, preweaning mortality, based as a percentage of pigs found alive, was 20.3% for control sows, 13.8% f

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40

Gao, Xin, Qiong Hu, Lawrence Chan, Cally Ma, and Junmei Zhao. "PSVI-3 Gestational Inulin Supplementation Stabilizes Glucose Metabolism and Improves Reproductive Performance of Sows." Journal of Animal Science 99, Supplement_1 (May 1, 2021): 219–20. http://dx.doi.org/10.1093/jas/skab054.358.

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Abstract The beneficial effects of dietary fiber on sows performance have been widely studied, but it’s still unclear how fermentable fiber affects sows glucose metabolism and reproduction. The present study aimed to investigate the effects of late gestational inulin supplementation on sows pre-farrowing glucose metabolism and reproductive performance. A total of 106 sows were allotted randomly to 2 groups, receiving either a control diet with 4% wheat flour, or a diet with 4% inulin, from gestation day 85 to 110, both diets met nutrient requirements expressed by NRC. On day 111, sows blood gl

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41

Krempa, N. U. "Dynamics of blood immunological indicators in the period of the reproductive cycle under different technologies of keeping." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 20, no. 92 (December 10, 2018): 46–50. http://dx.doi.org/10.32718/nvlvet9209.

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The obtained results of search on the influence of technology and conditions of sows holding of different physiological states on immunological parameters indicate that that the content of T-lymphocytes in the blank and sows of the first half of fertility in both farms was very high and exceeded the upper limit of physiological norm by 1–3% on average. However, with the onset of the second half of fertility and lactation in sows, a decrease in its level, fluctuating within the limits of the physiological norm (49.12%–51.37%), was noted. The content of T-helper cells in sows of all physiologica

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John, Angelika, and Martin Wähner. "Influence of body condition during selection and insemination on reproduction performances of different pig races." Biotehnologija u stocarstvu 18, no. 1-2 (2002): 45–51. http://dx.doi.org/10.2298/bah0202045j.

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On a pig farm in Thuringia (Germany), data from 775 sows of 5 different genetic constructions were recorded from birth until exit. Based on live weight gain and lateral back fat thickness measured at selection (around 180th living day), statistical relations were analyzed in regard to the influence of both factors on reproduction performance. There are no uniform results in regard to their influence, from our investigations nor in literature references. Different races, stable systems, methods and equipment of measurement cause partly opposite statements about the influence of live weight gain

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43

Humpolíček, Petr, Zdeněk Tvrdoň, and Tomáš Urban. "Breeding for reproduction traits in context of multiplication herds efficiency in swine." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 3 (2013): 647–50. http://dx.doi.org/10.11118/actaun201361030647.

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Presented study is a follow-up to the studies focused on effect of different selection pressure applied on two subpopulations of purebred Czech Large White sows on performance in multiplication herds. Higher selection pressure particularly on litter size and number of function nipples, while lower pressure on growth performance was applied in one population. About 1214 farrows of 393 F1 Czech Large White sows were included into statistical evaluation. The mixed linear models using the procedure REML in SAS for Windows 9.1.2. was used. The hypothesis that progeny of sows from hyper-prolific sub

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Santos, José Maurício Gonçalves dos, Ivan Moreira, and Elias Nunes Martins. "Lysine and metabolyzable energy requirements of lactating sows for subsequent reproductive performance." Brazilian Archives of Biology and Technology 49, no. 4 (July 2006): 575–81. http://dx.doi.org/10.1590/s1516-89132006000500006.

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The requirements of lactating sows for total lysine and metabolyzable energy (ME) to support subsequent reproduction performance were evaluated. One hundred and twenty sows were used. The treatments were constituted of eight diets (factorial arrangement of four levels of total lysine: 0.75, 0.90, 1.05 and 1.20%, and two levels of ME: 3,250 and 3,400 kcal ME/kg). There was interaction between lysine and ME on the plasma urea nitrogen (PUN), with linear decrease effect on level of 3,250 kcal ME/kg, and quadratic effect on level of 3,400 kcal ME/kg, with the lowest level of PUN with 1.06% lysine.

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45

Arend, Lidia S., Raquel Fernandez Vinas, Gustavo Silva, Aaron Lower, Joseph F. Connor, and Robert V. Knox. "174 Effects of Nursing a Large Litter and Ovarian Response to Gonadotropins at Weaning on Subsequent Fertility in First Parity Sows." Journal of Animal Science 100, Supplement_2 (April 12, 2022): 85. http://dx.doi.org/10.1093/jas/skac064.137.

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Abstract Post-weaning fertility failures occur more often in parity 1 (P1) sows due to increased metabolic demands for lactation and inability to meet energy requirements for maintenance, growth, and reproduction. We hypothesized that body condition loss occurs more frequently in P1 sows nursing a large litter, resulting in impairment of ovarian follicle development during lactation and post-weaning. At 24 h post-farrowing, P1 sows (n = 123) were assigned to treatment (TRT) based on body weight and the number of functional teats to receive High Number (HN, 15 to 16) or Low Number (LN, 12) of n

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Khalak, V. I., B. V. Gutyj, S. O. Usenko, and A. M. Shostya. "Signs of long-term adaptation and their relationship with the indicators of reproductive qualities in sows of the universal direction of productivity." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 23, no. 95 (December 11, 2021): 147–53. http://dx.doi.org/10.32718/nvlvet-a9522.

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The paper presents the results of the study of signs of long-term adaptation and indicators of reproductive qualities of sows of the universal direction of productivity, as well as calculates the economic efficiency of research results. The experimental part of the work was performed in the agricultural formations of the Dnipropetrovsk region and the laboratory of animal husbandry of the State Institution “Institute of Grain Crops of NAAS of Ukraine”. The work was performed in accordance with the research program № 31 “Genetic improvement of farm animals, their reproduction and conservation of

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Young, L. G., G. J. King, J. Shaw, M. Quinton, J. S. Walton, and I. McMillan. "Interrelationships among age, body weight, backfat and lactation feed intake with reproductive performance and longevity of sows." Canadian Journal of Animal Science 71, no. 2 (June 1, 1991): 567–75. http://dx.doi.org/10.4141/cjas91-067.

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Data from an experiment involving gilts mated at first, second or third observed estrus and feeding of three levels of gestation energy throughout four parities were used to evaluate the effects of age, body weight, backfat thickness and changes in them on various measures of reproductive performance. Regression equations were estimated by using a stepwise regression analysis. Data were available for 304 initial sows that farrowed a first litter of which 115 farrowed to initial assigned breeding within gestation dietary energy level and completed four parities. Age, weight, backfat thickness o

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48

Luc, D. D., H. X. Bo, P. C. Thomson, D. V. Binh, P. Leroy, and F. Farnir. "Reproductive and productive performances of the stress-negative Piétrain pigs in the tropics: the case of Vietnam." Animal Production Science 53, no. 2 (2013): 173. http://dx.doi.org/10.1071/an12108.

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The objective of the present study is to investigate the reproduction, production and semen traits of the stress-negative Piétrain line of pigs in the north of Vietnam, as well as to identify various factors (halothane genotype, generation-origin, parity, sex and month of the year) acting on these traits. The experiment was carried out on a purebred nucleus on Dong Hiep farm, Haiphong province in Vietnam. The reproduction performances and the sperm quality measures were based on 12 sows and 5 boars imported from Belgium as well as on 29 sows and 14 boars born in Vietnam, while the production p

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Lechowski, Jerzy, Anna Kasprzyk, Mirosław Tyra, and Beata Trawińska. "effect of ascorbic acid as a feed additive on indicators of the reproductive performance of Pulawska breed gilts." Medycyna Weterynaryjna 72, no. 6 (2016): 378–82. http://dx.doi.org/10.21521/mw.5518.

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The aim of the study was to determine the effect of vitamin C on indicators of gilts and sows reproductive value. The study was conducted using 64 gilts of the Pulawska breed. The experimental gilts received a supplement of vitamin C in an amount of 2.4 g daily throughout the whole experiment. Sixteen gilts from both control and experimental groups were mated in their third estrus. In order to determine the number of corpora lutea and the state of development of the reproductive organs, other gilts from the control and experimental groups were slaughtered after third estrus between the 5th and

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Nowak, Błażej, Anna Mucha, Magdalena Moska, and Wojciech Kruszyński. "Reproduction Indicators Related to Litter Size and Reproduction Cycle Length Among Sows of Breeds Considered Maternal and Paternal Components Kept on Medium-Size Farms." Animals 10, no. 7 (July 9, 2020): 1164. http://dx.doi.org/10.3390/ani10071164.

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The present research aimed to study twelve reproductive indicators related to litter size and the farrowing interval for three maternal (Polish Large White, Polish Landrace, and Yorkshire) and three paternal (Duroc, Berkshire, Hampshire) breeds, raised on two farms in Poland and a farm in the United States. The study included 196 sows (45 Polish Large White, 37 Polish Landrace, 26 Berkshire, 33 Duroc, 40 Yorkshire, and 15 Hampshire), which altogether gave birth to 736 litters. The Kruskal-Wallis test was used to verify the influence of the breed on the reproductive traits, with a post-hoc proc

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