Fig. 3.

Effect of dietary xylooligosaccharide (XOS) (200 mg/kg) supplementation on bacterial beta diversity. (A) Principal coordinate analysis (PCoA) based on Bray–Curtis dissimilarity indices calculated from OTU abundance matrix. The horizontal axis represents the first principal coordinate and the vertical axis represents the second one. (B) Partial least squares discriminant analysis (PLS-DA). The horizontal axis represents the first component (COMP1) of PLS-DA and the vertical axis represents the second one (COMP2). The percentages in parentheses represent the explanatory values of the principal coordinates or the components for the difference in sample composition. Triangles, the control group; rectangles, XOS-supplemented group (200 mg/kg).