Fig. 5From: Dietary oregano essential oil supplementation improves intestinal functions and alters gut microbiota in late-phase laying hensPearson’s correlation analysis between the abundances of ileal microbiota and production or intestinal parameters. a at family level and b at genus level. The intensity of the colors represents the degree of association. Red represents a significant positive correlation (P < 0.05), blue represents significantly negative correlation (P < 0.05), and white shows that the correlation was not significant (P > 0.05)Back to article page