Effects of probiotic fermented soybean meal on reproductive performance,lactation performance of sows,and growth performance of piglets
The study aimed to explore the impact of different proportions of probiotic fermented soybean meal on the reproductive performance,lactation performance of sows,and the growth performance of piglets.Forty-eight healthy and similar-sized pregnant sows were selected and randomly divided into four groups,with 12 replicates per group,each replicate consisting of one sow.The control group sows were fed a basal diet,while the fermented soybean meal groups replaced the soybean meal in the basal diet with 5％,10％,and 15％of probiotic-fermented soybean meal,respectively.A one-week pre-experimental period was followed by a formal experimental period from 90 days of gestation to 21 days postpartum.The results showed that feeding sows with 10％and 15％of probiotic fermented soybean meal increased the number of piglets born,the number of live piglets,and the number of healthy piglets(P＜0.05),and reduced the average duration of parturition(P＜0.05).The rate of healthy piglets in all groups fed with fermented soybean meal was increased,and the rate of stillbirths was decreased(P＜0.05).Compared with the control group,feeding with 10％and 15％of probiotic fermented soybean meal significantly increased the sow's feed intake during the second week and the average feed intake during the entire lactation period(P＜0.05),significantly reduced backfat loss(P＜0.05),increased milk yield,milk fat percentage,lactose percentage,milk protein percentage,and non-fat solid levels(P＜0.05),and reduced the level of milk urea nitrogen(P＜0.05).Compared with the control group,the birth weight,weaning number,and individual weight at weaning of piglets in the 10％and 15％probiotic fermented soybean meal groups were all increased(P＜0.05),and the diarrhea rate was decreased(P＜0.05).The weaning weight and survival rate of piglets in all probiotic fermented soybean meal groups was increased(P＜0.05).The study indicates that the addition of an appropriate proportion of probiotic fermented soybean meal to the diet of pregnant sows can improve reproductive performance and milk yield,enhance milk quality,and improve the growth performance and survival rate of piglets.Considering production costs,the optimal addition ratio of probiotic fermented soybean meal is 10％.
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