Table 3. Enriched metabolic pathways of the gut microbiota in HJ compared to LJ

Pathway code (MetaCyc) Pathway name ALDEx difference Metabolite
PWY-7527 L-methionine salvage cycle III 5.68 2-oxoglutarate
PWY-4361 S-methyl-5-thio-α-D-ribose 1-phosphate degradation 5.48 2-oxoglutarate, L-methionine
PWY-7616 Methanol oxidation to carbon dioxide 5.46 CO2
PWY-6731 Starch degradation III 4.38 D-glucopyranose 6-phosphate
PWY-5183 Superpathway of aerobic toluene degradation 3.86 Acetyl-CoA, Succinyl-CoA
PWY-6562 Norspermidine biosynthesis 3.79 Norpermidine
PWY-7007 methyl ketone biosynthesis 3.39 A methyl ketone
PWY-5181 Toluene degradation III (aerobic) (via p-cresol) 3.35 Succinyl-CoA
KETOGLUCONMET-PWY Ketogluconate metabolism 3.32 D-gluconate 6-phosphate
3-HYDROXYPHENYLACETATE-DEGRADATION-PWY 4-hydroxyphenylacetate degradation 3.29 Succinate
HJ, high-performance Jeju horses; LJ, low-performance Jeju horses; ALDEx, ANOVA-like differential expression.