Fig. 4

Principal coordinate analysis (PCoA) plot shows beta diversity analysis between different treatments at 10,000 reads depth per sample of cecal contents of broilers from d 42 post-hatch. a Bray Curtis distance, b Unweighted UniFrac distance. The pairwise comparison did not show any significant differences (P > 0.05). Xylanase treatments are represented by colors (red for 0 BXU/kg feed, blue for 8,000 BXU/kg feed, and green for 16,000 BXU/kg feed), and xylooligosaccharides treatments are represented by shapes (circle for 0 g per ton feed, triangle for 50 g per ton feed, and square for 100 g per ton feed)