Differences in the relative abundance (%) of bacterial phyla in intestinal digesta and feces of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).

<p>Differences in the relative abundance (%) of bacterial phyla in intestinal digesta and feces of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).</p

Differences in the relative abundance (%) of bacterial genera in intestinal digesta and feces of low and high residual feed intake (RFI) male broiler chickens raised at two geographical locations (L).

<p>Differences in the relative abundance (%) of bacterial genera in intestinal digesta and feces of low and high residual feed intake (RFI) male broiler chickens raised at two geographical locations (L).</p

Relative abundance (%) of the most abundant phyla in ileal and cecal digesta and feces of broiler chickens raised at two geographical locations.

<p>Relative abundance (%) of the most abundant phyla in ileal and cecal digesta and feces of broiler chickens raised at two geographical locations.</p

Differences in α-diversity indices in intestinal digesta and feces of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).

<p>Differences in α-diversity indices in intestinal digesta and feces of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).</p

Selected genera correlating to feed efficiency and performance traits in low and high residual feed intake (RFI) female and male chickens (<i>P</i> < 0.05) across geographical locations and by intestinal site.

<p>Selected genera correlating to feed efficiency and performance traits in low and high residual feed intake (RFI) female and male chickens (<i>P</i> < 0.05) across geographical locations and by intestinal site.</p

Total bacterial gene copy numbers (log₁₀ 16S rRNA gene copies/g fresh matter) in intestinal digesta and feces of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).

<p>Total bacterial gene copy numbers (log₁₀ 16S rRNA gene copies/g fresh matter) in intestinal digesta and feces of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).</p

Performance and feed efficiency data of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).

<p>Performance and feed efficiency data of low and high residual feed intake (RFI) broiler chickens raised at two geographical locations (L).</p

Venn diagrams and β-diversity plot.

<p>(A) Venn diagram showing the number of shared operational taxonomic units between two geographical locations (L1 and L2); (B) Venn diagram showing the number of shared operational taxonomic units between ileum, ceca and feces; principal coordinate analysis plots of weighted UniFrac analysis colored by (C) intestinal site; D) batch and geographical location; E) RFI ranks; and F) sex. Rarefaction depth of 10,000 sequences per sample removed 9 samples from the dataset; for ileum, n = 31 low RFI chickens and n = 30 high RFI chickens; for ceca, n = 32 low RFI chickens and n = 35 high RFI chickens; for feces, n = 33 low RFI chickens and n = 35 high RFI chickens.</p