外源性谷氨酰胺和谷氨酸对早期断奶仔猪肠粘膜形态、结构和小肠吸收功能及骨骼肌中DNA、RNA浓度的影响

74头28日龄健康二元杂交断奶仔猪分成3组，用于研究外源性谷氨酰胺（glutamine,Gln)和谷氨酰（glutamate, Glu)对断奶仔猪小肠粘膜形态，结构和功能及骨骼肌中DNA，RNA合成的影响。结果表明：与对照组相比，添加1%谷氨酰胺或1%谷氨酸可防止断奶后1周内空肠绒毛萎缩，减少断奶后2周内空肠固有膜内未成熟细胞数；显著改善断奶后1周内小肠吸收功能，并促进肌肉中RNA合成。这些结果为利用Gln、Glu缓解仔猪断奶应激，改善生产性能提供了实验基础。

Effects of Glutamine and Glutamate on Small Intestinal Structure, Active Absorption and DNA, RNA Concentrations in Muscle Tissue of Early Weaned Piglets

Seventy-four piglets were used to investigate the effect of exogenous Glutamine and Glutamate on the intestinal feature,struct ure and active absorption and DNA,RNA concentrations of muscle in early-weaned piglets.The results suggested that:compared with control piglets,glutamine and g lutamate supplementation(1%) prevented intestinal atrophy during the first week postweaning and improved the ability to absorb nutrients of small intestine,as w ell as the RNA concentration in muscle tissue.These results provide an experimen tal basis for use of Glutamine and Glutamate on alleviating the weaning stress a nd improving the growth performance.