Comparison of the relative abundances of bacterial phyla in the faeces of Group A (fed Diet F, n = 6) and Group B (fed Diet P, n = 6) horses on Day 0, and Day 4 (both groups fed Diet P).

The bacterial phyla are listed in descending order of relative abundances for Group A horses on Day 0, and all phyla present at relative abundances of <1% in all samples are grouped as Other Taxa.
aIQR–Interquartile range.
bLevel of statistical significance after Bonferroni adjustment for multiple comparisons P = 0.004.
Comparison of the relative abundances of bacterial phyla in the faeces of Group A (fed Diet F, n = 6) and Group B (fed Diet P, n = 6) horses on Day 0, and Day 4 (both groups fed Diet P).