Fig. 2

a Venn diagram of unique or shared OTUs in the FT (blue) and CON (red) groups. Ninety-five and 101 species were uniquely found in FT and CON cows, respectively, while 1756 species were found in both groups. b Principal component analysis (PCoA) of the ruminal bacterial community in the FT and CON groups. The first two principal components (PC1 and PC2) accounted for 78.62% of the total variation. c-e Top 15 abundant species at at the phylum level (c) and genus level (d) and species with significant differences between the FT and CON groups at the genus level (e). P values were calculated by Student’s t test. FT, cows with feed tossing behaviour; CON, cows without feed tossing behaviour