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Composition comparison of cecal microbiota between the HFE and LFE groups. PCoA plots (based on OTUs) of beta diversity. For HFE: n = 30 broilers; for LFE: n = 29 broilers. Plot is based on the Bray-Curtis distances. The amount of variance is depicted by the percentages in parentheses on each axis. Abbreviations: HFE, high feed efficiency; LFE, low feed efficiency; OTUs, operational taxonomic units; PCoA, principal coordinate analysis.
