Figure 2.

Effects of Bacillus subtilis PB6 on intestinal bacterial diversity in broilers challenged with Clostridium perfringens. (a) Diversity and composition of ileal microbiota (LEfSe score) in broilers. (b) Diversity and composition of ileal microbiota (circular cladogram) in broilers. (c) Alpha diversity analysis (Shannon) of ileal microbiota in broilers. (d) Beta diversity analysis (PCoA) of ileal microbiota 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).