脯氨酸基环二肽对母猪繁殖性能、初乳成分及血清免疫因子的影响OA

This experiment aimed to investigate the effects of proline-based cyclic dipeptide on the reproductive performance,the incidence of postpartum'triple syndrome',colostrum composition,serum immune factors,and antioxidant indices in sows.A total of 96 healthy binary sows parities 2～5 were randomly divided into four groups with 24 replicates per group and one sow per replicate.The control group was fed a basal diet,while experimental groups Ⅰ,Ⅱ,and Ⅲ received the basal diet supplemented with 0.05%,0.10%,and 0.15%proline-based cyclic dipeptide,respectively.The test period was 58 days.The results showed that compared with the control group,the piglet survival rates in experimental groups Ⅰ,Ⅱ,and Ⅲ increased by 0.97%,4.63%,and 3.79%,respectively.The 28-day litter weaning weight was significantly increased in experimental groups Ⅱ and Ⅲ(P<0.05).The overall incidence of postpartum'triple syndrome'in experimental groups Ⅰ,Ⅱ,and Ⅲ decreased by 22.22%,33.33%,and 55.56%,respectively.Colostrum analysis indicated that the somatic cell count was significantly decreased in experimental groups Ⅱ and Ⅲ(P<0.05),and the immunoglobulin M(IgM)content was significantly increased in experimental groups Ⅰ,Ⅱ,and Ⅲ(P<0.05).The glutathione peroxidase activity was extremely increased in experimental groups Ⅰ and Ⅱ(P<0.01),and the malondialdehyde content was extremely decreased in experimental groups Ⅰ,Ⅱ,and Ⅲ(P<0.01).The study shows that appropriate supplementation with proline-based cyclic dipeptide can improve reproductive performance,reduce the incidence of'triple syndrome',enhance colostrum quality,and strengthen the antioxidant capacity and immunity in sows.The recommended supplementation level is 0.10%.