Fig. 4

Relative abundance of bacterial community proportions at the phylum (a) and genus (b) levels are compared between the two groups based on the 16S rRNA data (as a percentage of total sequences). The most ten abundant differential phyla screened by metagenomic sequencing based on the Welch's t-test (n = 4 per group) (c). The significantly differential microorganisms based on the linear discriminant analysis effect size (LEfSe) cladogram in metagenomic sequencing (d), and the differences are represented by the color of the group. “F” means indoor feeding group; “G” means grazing group