FIG 5 .

A portion of heritable OTUs were found to be associated with host physiology in a previous study (13). Six of the 22 heritable OTUs that were associated in our previous study with different cow production indices, namely, dry matter intake (DMI), milk protein, and feed efficiency, measured as residual feed intake (RFI). OTUs and their taxonomy are in the rows, and the production indices are in the columns. The ampersand inside a tile indicates that a significant correlation was found, in the current study, between the heritable OTU and the production index.