FIGURE 4.

The difference comparison of strains between groups in the ileum. About 15 bacterial strains of ileal microbiota were both increased in ZnO group or antibiotics group, such as 4 Clostridium strains, 2 Treponema strains, 1 Lactobacillus strain, 1 Eubacterium strain, 1 Methanobrevibacter strain, 1 Selenomonas strain, and so on. Meanwhile, about 22 bacterial strains of ileal microbiota were both reduced in ZnO group or antibiotics group, such as 5 Helicobacter strains, 3 Ruminococcus strains, 3 Bacteroides strains, 2 Streptococcus strains, 1 Chlamydia strain, 1 Pseudomonas strain, and so on. Statistics were conducted by ANOVA with Tukey–Kramer test and Benjamini–Hochberg correction among three groups (n = 4), and the P-value lower than 0.05 and the relative abundance higher than 0.05% were shown.