Fig. 6

Dietary Trp supplementation repairs intestinal barrier damage in weaned piglets. A H&E staining of duodenum, jejunum and ileum tissue respectively. B Crypt depth, villus height, the radio of villus height to crypt depth and the muscular thickness of duodenum, jejunum and ileum. C Transmission electron microscopy showed the microvilli structure of jejunum. D Microvillus height. E The mRNA expression of ZO-1 and Occludin in duodenum, jejunum, and ileum. Data are shown as the mean ± SEM from eight independent experiments. *P < 0.05, **P < 0.01 vs. CON; ^#P < 0.05, ^##P < 0.01 vs. LPS; ^&P < 0.05, ^&&P < 0.01 vs. 0.2%Trp