The purpose of this experiment was to study the effects of compound probiotic fermented feed on the growth performance,nutrient apparent digestibility,fecal microbial flora,and serum indexes of mutton sheep.Sixty-four(29.25±0.35)kg healthy Du-Han hybrid fattening rams were randomly divided into four groups with four replicates in each group and four sheep in each replicate.The control group,test group 1,test group 2,and test group 3 were fed with 0,5％,10％,and 15％compound probiotic fermented feed,respectively.The trial period was 60 days.The results showed that compared with the control group,the average daily gain of the test group 1 increased significantly(P＜0.05).The final weight and average daily gain of the test group 2 and test group 3 increased significantly(P＜0.05),and the feed-to-weight ratio decreased significantly(P＜0.05).The apparent digestibility of CP,EE,NDF,and ADF in the test group 2 and test group 3 increased significantly(P＜0.05).The number of Lactobacillus and Bifidobacterium in the test group 1,test group 2,and test group 3 increased significantly(P＜0.05),while the number of Escherichia coli decreased significantly(P＜0.05).The number of Salmonella in the test group 2 and test group 3 decreased significantly(P＜0.05).Compared with the control group,the contentrations of IgG,IgA,IL-2,TNF-α,TP,ALB,T-AOC,and SOD activities were significantly increased(P＜0.05),while the activities of ALT,AST,BUN,and MDA were significantly decreased(P＜0.05).The result shows that adding 10％and 15％compound probiotic fermented feed to mutton sheep diet can improve the growth performance,fecal microbial flora and serum indexes of mutton sheep,and increase the apparent digestibility of nutrients.
国家科技期刊平台
NSTL
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