The effect of glutamine on the production performance and immune function of lactating lambs
The experiment aims to explore the effects of adding glutamine to the diet on the growth performance,serum immune indicators,and nutrient apparent digestibility of lambs.120 healthy lactating lake lambs with an average weight of(6.71±0.43)kg were randomly divided into 4 groups,with 6 replicates in each group and 5 sheep in each replicate.The control group was fed with basic diet,while the experimental group was supplemented with 0.1%,0.2%,and 0.4%glutamine in the basic diet,respectively.The pre trial period was 7 days,and the main trial period was 42 days.The results showed that compared with the control group,the diet supplemented with 0.2%and 0.4%L-Glu significantly increased the final weight of lambs by 6.17%and 7.93%(P＜0.05),and the average daily weight gain significantly increased by 15.22%and 19.90%(P＜0.05),respectively.The feed to meat ratio significantly decreased by 10.05%and 12.18%(P＜0.05);Supplementing with 0.1%～0.4%L-Glu significantly increased the serum IgG content of lambs and significantly reduced the serum TNF-α content(P＜0.05).The serum IL-2 content of lambs with 0.2%L-Glu was significantly increased(P＜0.05);The addition of 0.1%～0.4%L-Glu significantly increased the apparent digestibility of crude protein in lambs(P＜0.05),while the supplementation of 0.2%and 0.4%L-Glu significantly increased the apparent digestibility of crude fiber and neutral detergent fiber in lambs(P＜0.05).Conclusion:Supplementing with 0.4%L-Glu can significantly improve the production performance,serum immunity,and nutrient apparent digestibility of lactating lambs.
glutaminelambgrowth performanceimmunologic function
万方数据
维普
