Fig. 3

Venn diagram of ASV levels of rumen fluid bacteria (A) and archaea (B), Community composition of rumen fluid bacteria (C, D) and archaea (E, F). FRN group represents the Nitrate (12 mmol/L) added group, FRM group represents the Medicago sativa L. (25%) added group, FRH group represents the Helianthus tuberosus L. (3%) added group, and FR represents the control group (housed basal diet)