Figure 1.

Effects of Bacillus subtilis PB6 on the intestinal bacterial structure in broilers challenged with Clostridium perfringens. (a) Venn diagrams showing the shared OTUs between the five different treatments. (b) Effects of relative abundance (%) of ileal bacterial taxa at the phylum level of broilers. (c) Relative abundance (%) of ileal bacterial taxa at the genus level of broilers. (d) The relative abundance (%) of ileal bacterial taxa at the genus level of Streptococcus, Clostridium XI, and Staphylococcus in broilers. Treatment information: A: basal diet; B: basal diet and CP challenge; C: CP challenge+10 mg/kg enramycin (positive control group); D: CP challenge+4 × 10⁷ CFU/kg of feed B. subtilis PB6 (PB6 low-dosage group); E: CP challenge+6 × 10⁷ CFU/kg of feed B. subtilis PB6 (PB6 high-dosage group).