不同酵母培养物对湖羊生长性能、生化指标及瘤胃发酵的影响OA

To investigate the effects of different yeast cultures on the growth performance,biochemical indicators,and rumen fermentation of Hu sheep,120 Hu sheep with a consistent genetic background and a body weight of(30±3)kg were randomly divided into 5 groups,with 6 replicates per group and 4 sheep per replicate.The control group was fed a basic diet,while the experimental groups A,B,C,and D were fed basal diet supplemented with 1010 g(只·d)yeast culture.The pre-feeding period was 10 days,and the formal experimental period was 90 days.The results showed that adding different yeast cultures had a tendency to increase the body weight of Hu sheep,but the difference was not significant(P>0.05).During the whole experiment,compared with control group and other yeast culture groups,the average daily gain of yeast culture groups A and D was significantly increased(P<0.05),and the ratio of feed to meat was significantly decreased(P<0.05);Different yeast cultures had no significant effect on serum biochemical indices,but dietary supplementation of yeast culture A could significantly reduce serum urea nitrogen(BUN)content(P<0.05).In summary,different yeast cultures also had no significant effects on rumen fermentation indexes of Hu sheep in experimental 90d(P<0.05).In summary,yeast culture have positive effects on growth performance,serum biochemistry and other indicators of Hu sheep,but there are certain differences in the effects of different yeast culture.Under the conditions of this experiment,yeast culture A has the best effect on growth performance,serum biochemistry,rumen fermentation and other indicators.