Fig. 4

Alterations in fecal metabolome profiles between normal return and non-return sows. A 35 differential metabolite modules identified by Student's t-test. ^*FDR < 0.05, ^**FDR < 0.01, ^***FDR < 0.001. The y-axis indicates the eigenvector of each module as the representative value of its metabolite profile. B and C The KEGG pathways enriched by differential fecal metabolite features (including both lipid molecules and metabolites) in non-return (B) and normal return sows (C). The size and color of the dots indicate the value of the KEGG pathway impact and the enrichment significance of the pathways, respectively