Fig. 2.

Gut microbiota population of broilers fed with experimental diets. a Intestinal microflora at phylum; b Intestinal microflora at genus level; b–d Specific bacterial populations at the species level in the cecum of birds (Lactobacillus family, Akkermansia muciniphila, and Streptococcus gallolyticus group). *P < 0.05 compared with CON group. ^{a, b}Mean values within a row have different superscript letters were significantly different (P < 0.05). Treatment groups: CON, control group fed with basal diet; BAM, group fed with 10 mg/kg of bambermycin supplemented diet; SPL, group fed with 10 mg/kg of sophorolipid-supplemented diet