TABLE 3.

KEGG pathways that showed differential abundance between the rectal microbiota of SS and NS

Level 2	Level 3	Abundancea	Log FCb	P value
Amino acid metabolism	Tryptophan metabolism	0.17	−0.32	0.09
Carbohydrate metabolism	Pyruvate metabolism	1.07	0.10	0.09
Cell motility	Bacterial chemotaxis	0.62	−0.32	0.05
	Bacterial motility proteins	1.27	−0.33	0.04
	Flagellar assembly	0.55	−0.36	0.06
Glycan biosynthesis and metabolism	Lipopolysaccharide biosynthesis	0.21	−0.28	0.07
	Lipopolysaccharide biosynthesis proteins	0.30	−0.29	0.02
Lipid metabolism	Biosynthesis of unsaturated fatty acids	0.14	−0.27	0.07
	Sphingolipid metabolism	0.21	−0.21	0.06
Membrane transport	Secretion system	1.35	−0.14	0.07
Metabolism of other amino acids	Glutathione metabolism	0.18	−0.25	0.04
Metabolism of terpenoids and polyketides	Biosynthesis of ansamycins	0.12	0.21	0.07
Signal transduction	Two-component system	1.58	−0.20	0.02
Xenobiotics biodegradation and metabolism	Aminobenzoate degradation	0.13	−0.26	0.06
	Naphthalene degradation	0.16	0.23	0.07

^aData represent average abundances among all the steers.

^bLog FC, log₂ fold change.