Fig. 3

Differences in intestinal microbial composition among the different groups. A Differences in the relative abundance of the microbial community at the phylum level. B Venn diagram of the unique and shared amplicon sequence variants (ASVs) in the intestinal microbiota among different groups. In the Venn diagram, one petal represents one group, the numbers in the core of the petals represent feature sequences shared by all groups, and the numbers on the petals represent feature sequences unique to each group. C Cecal microbial α diversity of broilers reflected by the Chao1 index. D Principal coordinate analysis (PCoA) of unweighted UniFrac calculated based on the relative abundance of OTUs. The data are expressed as the means ± SDs of three replicates. E UPGMA clustering tree based on weighted UniFrac distances