Effects of compound probiotics on the reproductive performance and immunity of sows
This experiment was conducted to investigate the effects of different levels of compound probiotics on reproductive performance and immune function of sows,and to determine the optimal supplemental level of probiotics in sow production.For-ty pregnant sows with a gestation period of 60 days with a parity of 2-3 fetuses were selected and divided into 4 groups with 1 pregnant sow per replicate according to the single-factor experimental design principle.The pregnant sows in the control group were fed a basic diet(without any compound probiotics),and the pregnant sows in experimental groups 1 to 3 were fed a basic diet supplemented with 250 mg/kg,500 mg/kg and 1,000 mg/kg compound probiotics,respectively.The test period was from the 60th day of gestation to the day 21 post-parturition.The results showed that 500 mg/kg and 1 000 mg/kg compound probi-otics increased the number of live and healthy piglets(P＜0.05),and decreased the number of stillbirths(P＜0.05).The aver-age weight of newborn piglets,average weight of the weaned,average daily gain,and survival rate of the weaned were all im-proved(P＜0.05).The diarrhea rate of piglets in all compound probiotics groups was significantly reduced,which was 27.11％,52.85％and 57.86％lower in comparison with the control group,respectively(P＜0.05).The level of globulin A was significantly higher among sows fed with 250 mg/kg,500 mg/kg and 1 000 mg/kg probiotics(P＜0.05),while the levels of globulin G and M were significantly raised among sows fed with 500 mg/kg and 1 000 mg/kg probiotics(P＜0.05).The lev-el of TNF-α was significantly lowered among sows fed with 250 mg/kg,500 mg/kg and 1000 mg/kg compound probiotics(P＜0.05),while the level of interleukin-10 was significantly higher among sows fed with 500 mg/kg and 1 000 mg/kg com-pound probiotics(P＜0.05).In conclusion,feeding pregnant sows with compound probiotics could improve their reproductive performance and immunity as well as the growth performance of piglets.The optimal supplemental level of compound probiotics is determined as 500-1 000 mg/kg.
万方数据
维普
