Table 2.

Effects of high-grain (HG) feeding on average relative abundance of genus level (% of total sequences) in rumen epithelium, ranked by alphabetical order of first letter of phylum, family and genus name.

Phylum	Family	Genus	Abundance (%)		P-value
			Hay	HG
Actinobacteria	Coriobacteriaceae	Unclassified Coriobacteriaceae	3.10 ± 0.54	0.86 ± 0.22	0.008
Bacteroidetes	Prevotellaceae	Prevotella	4.36 ± 0.79	3.66 ± 0.50	0.548
		Unclassified Prevotellaceae	5.34 ± 0.39	8.30 ± 0.80	0.056
	Rikenellaceae	Unclassified Rikenellaceae	5.80 ± 0.56	3.59 ± 0.50	0.016
	Unclassified Bacteroidales	Unclassified Bacteroidales	5.00 ± 0.25	4.02 ± 0.44	0.095
Chloroflexi	Anaerolineaceae	Unclassified Anaerolineaceae	1.05 ± 0.06	2.84 ± 0.53	0.008
Firmicutes	Lachnospiraceae	Acetitomaculum	2.23 ± 0.34	1.33 ± 0.29	0.095
		Butyrivibrio	4.48 ± 0.43	17.55 ± 2.05	0.008
		Howardella	3.68 ± 0.53	1.75 ± 0.23	0.008
		Syntrophococcus	1.71 ± 0.34	1.13 ± 0.08	0.151
		Unclassified Lachnospiraceae	9.82 ± 0.77	9.50 ± 0.78	1.000
	Ruminococcaceae	Ruminococcus	0.45 ± 0.05	2.20 ± 0.52	0.008
		Unclassified Ruminococcaceae	8.36 ± 0.85	4.97 ± 0.77	0.016
	Unclassified Clostridiales	Mogibacterium	3.30 ± 0.37	5.36 ± 0.56	0.016
		Unclassified Clostridiales	4.75 ± 0.72	7.91 ± 0.85	0.032
	Veillonellaceae	Succiniclasticum	1.16 ± 0.22	3.21 ± 0.35	0.008
	Erysipelotrichaceae	Unclassified Erysipelotrichaceae	5.08 ± 0.46	2.76 ± 0.31	0.008
Proteobacteria	Comamonadaceae	Comamonas	2.59 ± 0.37	2.69 ± 0.34	1.000
	Neisseriaceae	Unclassified Neisseriaceae	4.57 ± 2.10	0.14 ± 0.05	0.008
	Desulfobulbaceae	Desulfobulbus	5.74 ± 1.26	5.27 ± 0.63	1.000
	Campylobacteraceae	Campylobacter	2.27 ± 0.23	1.96 ± 0.48	0.841
Tenericutes	Unclassified Mollicutes	Unclassified Mollicutes	2.27 ± 0.21	0.30 ± 0.07	0.008

Only results obtained for the predominant bacterial genera (relative abundance >1% in at least one sample) are presented. Values shown are means ± SEM, n = 5.