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(A) Principal coordinates analysis (PCoA) of bacterial communities in the cecal digesta of Chinese yellow-feathered broilers (based on the Bray–Curtis distance). Circles with dashed or solid line indicate that groups were significantly distinct using AMOVA (P < 0.05). (B) Phylum-level relative abundance of 16S rRNA gene sequences from the cecal digesta of Chinese yellow-feathered broilers. CE, citrus extract; AMOVA, analysis of molecular variance.
