谷氨酰胺对保育猪生长性能、免疫器官及其小肠形态学发育程度影响的研究

Effect of glutamine on growth performance, morphological development degree of small intestine in nursing piglets

为研究不同添加量的谷氨酰胺对保育猪生长性能、免疫器官及其小肠形态学发育程度的影响,试验采用杜长大三元杂保育猪为试验材料,就不同添加量的谷氨酰胺对以上指标的影响进行探究。结果表明：在基础日粮中添加1.0%的谷氨酰胺能提高保育猪的生长性能,特别是在76～93日龄阶段相比其他组可以极显著增加平均日增重,降低料重比（P〈0.01）,同时也可以显著增加仔猪扁桃体指数（P〈0.01）,提高其他免疫器官指数,提升仔猪的免疫机能;在基础日粮中添加谷氨酰胺能有效改善并提高杜长大保育猪小肠形态学发育程度,维持猪肠道屏障功能及其完整性,且添加1.5%的谷氨酰胺能显著提高十二指肠的绒毛长度及绒毛宽度,降低空肠隐窝深度（P〈0.05）。说明谷氨酰胺能有效提升仔猪的生长性能、免疫机能,改善小肠结构发育情况的作用。

DLY nursing piglets were using as the materials to analyse the effect of glutamine on thegrowth performance, morphological development degree of small intestine in them. And the resultsshow that adding 1.0% of glutamine can improve the growth performance, espacially in the period ofthe age between 76 to 93 days, it can increase average daily gain and decrease feed/gain ratio highlysignificantly（P〈0.01）. At the same time, it can improve the tonsil index obviously（P〈0.05） and increaseother immune organs index so that the piglets can have a better immune function. While adding withglutamine can improve the development of small intestine in piglets and maintain completeness of alvine function. 1.5% of glutamine can increase the length and breadth of intestinal villus in duodenumand decrease the depth of recess in jejunum obviously（P〈0.05）. It illustrated that glutamine has positive effects on the growth performance,immune function and the development of small intestine in nursing pigs.