Fig. 9

Correlation analysis between gut microbiota (A, at phyum level; B, at genus level) and intestinal parameters in broilers on d 10. IL, interleukin; ZO, zonula occludens; TNF, tumor necrosis factor; V/C, villus height to crypt depth ratio. The red and blue panes represent positive and negative correlations, respectively. Color intensity means the Spearman’s r-value of correlations in each panel. The asterisks indicate significant correlations (^∗P < 0.05; ^∗∗P < 0.01). NC, negative control (broilers were free of challenge); PC, positive control (broilers were challenged with S. Typhimurium); AHLase, PC broilers supplemented with 10 U/g AHLase