表2-6 小肠黏膜形态数据.xls

In sum, oral administration of L. plantarum JL01 and L. rhamnosus GG ATCC53103 to weaned piglets increased apparent nitrogen digestion. We found that dietary supplementation of L. plantarum JL01 and L. rhamnosus GG ATCC53103 improved the gut microbial diversity of weaned piglets. With the help of functional genes encoded by intestinal dominant bacteria, the production of dominant metabolites L-tryptophan 3-Phosphonooxypyruvate, cis-Aconitate and Carbamoyl phosphate is promoted, and these metabolites promote the TCA cycle in different ways, which may lead to the increase of AKG, and then play a positive regulatory role in skeletal muscle protein deposition. Moreover, L-tryptophan has a positive regulatory effect on nitrogen metabolism. This finding further highlights the importance of gut microbiota for nitrogen metabolism and demonstrates an effect of L. plantarum JL01 and L. rhamnosus GG ATCC53103 to promote nitrogen metabolism in weaned piglets.