<i>Lactobacillus rhamnosus</i> GG ATCC53103 and <i>Lactobacillus plantarum</i> JL01 improved nitrogen metabolism in weaned piglets by regulating the intestinal flora structure and portal vein metabolites.

Compared to the Con group, the ingested nitrogen of the piglets in the Rha group, Lac group, and mix group was significantly increased ( P < 0.05), fecal nitrogen, urinary nitrogen, and total nitrogen emissions showed a decreasing trend, the apparent nitrogen digestibility of Rha and Lac groups tended to increase; the apparent nitrogen digestibility of the mix group increased by 1.88% ( P < 0.05), and the nitrogen deposition rate increased respectively increased by 4.17, 4.49, and 5.65% ( P < 0.05), and the nitrogen utilization rate increased by 2.82, 3.23, and 3.70%, respectively ( P < 0.05). 3.2.

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Compared with the Con group, the Shannon and Simpson indices of the Rha, Lac, and mix groups showed an increasing trend in the jejunum but were insignificant.

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