Fig. 3

Metabolome analysis of the gastrointestinal tract (GIT) of Gangba sheep. A Pathway classification of all identified metabolites. B Comparison of significantly enriched KEGG pathways between the NG and BF groups. C Pearson correlations between the top 40 microbial genera and a total of 33 of the top 300 metabolites involved in amino acid metabolism, lipid metabolism, carbohydrate metabolism and digestive system pathways. D Sankey diagram showing the microbial distribution. NG, natural grazing; BF, barn feeding