In order to study the effects of composite lactic acid bacteria on the growth performance,nutrient digestibility,and slaughter performance of fattening sheep,120 healthy and disease-free fattening period small tailed Han sheep with similar initial weight[(33.16±2.53)kg]were selected for the experiment,Which were randomly divide into 4 groups with 3 replicates per group,with 10 replicates per replicate.Each group of fattening sheep was fed with a basic diet supplemented 0,50,100,and 150 g/t of composite lactic acid bacteria,and the experiment lasted for 60 days.The results showed that:(1)The body weight and 31～60 day average daily gain of fattening sheep in the 100,150 g/t composite lactic acid bacteria group were significantly higher than those in the 0g/t composite lactic acid bacteria group(P＜0.05).The feed to weight ratio,31～60 day feed to weight ratio,and 1～60 day feed to weight ratio of fattening sheep in the 0 g/t composite lactic acid bacteria group were significantly higher than those in the 100 g/t composite lactic acid bacteria group and 150 g/t composite lactic acid bacteria group(P＜0.05).2)The dry matter digestibility of the 100 g/t composite lactobacillus group and the 150 g/t composite lactobacillus group was significantly higher than that of the 0 g/t composite lactobacillus group(P＜0.05),while the crude protein and acid washing fiber digestibility of the 50 g/t composite lactobacillus group,100 g/t composite lactobacillus group,and 150 g/t composite lactobacillus group were significantly higher than that of the 0 g/t composite lactobacillus group(P＜0.05).3)The live weight and carcass weight of fattening sheep in the 100 g/t composite lactobacillus group and 150 g/t composite lactobacillus group were significantly higher than those in the 0 g/t composite lactobacillus group(P＜0.05),and the eye muscle area of fattening sheep in the 100 g/t composite lactobacillus group was significantly higher than that in the 0 g/t composite lactobacillus group(P＜0.05).Conclusion:Compound lactic acid bacteria can improve the growth performance,nutrient digestibility,and slaughter performance of fattening sheep.Considering the economic benefits of feeding,the appropriate amount of compound lactic acid bacteria added is 100 g/t.
维普
万方数据
