Fig. 1From: Metagenomic analysis of rumen microbial population in dairy heifers fed a high grain diet supplemented with dicarboxylic acids or polyphenolsPrincipal coordinate analysis (PCoA) using unweighted Unifrac to explore dissimilarities in microbial composition among dietary treatments (Control, C; Organic acids, O and Polyphenols, P). The axes (PC1 = 12.4 % and PC2 = 11.0 %) account for 23.4 % of the total variation of the modelBack to article page