WebLitter size at weaning (LSW) was recorded after a 26.5 d lactation length (LL). Sow was the experimental unit and all data were analyzed as a function of the biological sow. Number … WebAfter parturition, litter data were recorded, and at the end of the lactation period animals were randomly selected from the litters of each group as next-generation breeders. The F1 selected as the breeder began its period of exposure after weaning and for seven weeks after which the matings were established following the same process as in ...
Feeding Levels and Practices in Pigs - MSD Veterinary Manual
Web17 jun. 2013 · Primiparous sows experienced delayed returns to estrus after weaning and reduced conception rates in the summer months in North Carolina. 3 One method used to avoid the reduction in litter size during the second parity was to extend the weaning-to-service interval. 2 In addition, administration of exogenous gonadotropins at the time of … Web9 jul. 2024 · Animals 2024, 10, 1164 2 of 15 Keywords: sows; reproduction; breed; litter size; farrowing interval; principal component analysis 1. Introduction The profitability of pig production strongly depends on the reproduction process, and sow reproductive performance results from features associated with litter size and farrowing interval [1]. taylah bennett
Use of altrenogest at weaning in primiparous sows - AASV
WebThe objective of this study was to relate survival and weight between birth and weaning with litter size variability. Kits come from the 12th generation of a divergent selection experiment for litter size variability. Number of born alive, death and foetuses at birth, number of kits at 4 day postpartum and number of weaned were recorded. WebLitter size ranges from one to four cubs, with a mean litter size of 1.7 and a median of two [1,32].Litters of three and four cubs comprise less than 9% and 1% of all births, respectively [32] and may vary by region (Table 7.1).Litter size likely is dependent on the interplay of many factors: genetics, number of ovulations, number of fertilized oocytes, number of … http://article.sapub.org/10.5923.j.ijaf.20240802.03.html taylah bland