Table 5. Relative abundance of taxa in the steers fed by two feeding system representing > 0.1% of total sequences that tend to differ (P < 0.1) and significantly differ (P < 0.05).

Phylum	Classification	Percentage of total sequences 1,2						SEM	P value (FS)	P value (Time)
		SF			TMR
		1.5 h	3 h	4.5 h	1.5 h	3 h	4.5 h			1.5 h	3 h	4.5 h
Bacteroidetes	Parabacteroides	0.22	0.30	0.21	0.17	0.15	0.16	0.02	0.081	0.336	0.026	0.084
	Family Paraprevotellaceae; Genus CF231	0.88	0.88	0.82	0.71	0.58	0.67	0.06	0.026	0.549	0.214	0.266
	Family Paraprevotellaceae; Genus YRC22	0.90	0.50	0.29	0.26	0.29	0.55	0.07	0.082	0.155	0.112	0.184
Firmicutes	Butyrivibrio	1.74	1.29	1.15	3.31	3.38	2.21	0.67	0.047	0.409	0.179	0.425
	Succiniclasticum	0.95	0.84	0.34	0.23	0.41	0.54	0.11	0.063	0.132	0.514	0.139
	Coprococcus	0.28	0.23	0.21	0.20	0.15	0.15	0.02	0.004	0.261	0.039	0.131
	Anaerovibrio	0.12	0.09	0.11	0.09	0.09	0.16	0.01	0.799	0.391	0.963	0.071
	RFN20	0.18	0.24	0.26	0.34	0.30	0.31	0.03	0.017	0.002	0.129	0.670
Proteobacteria	Succinivibrio	0.10	0.06	0.10	0.05	0.04	0.07	0.01	0.074	0.123	0.581	0.590
Lentisphaerae	Victivallaceae family	0.72	1.07	1.14	1.30	1.37	1.09	0.20	0.406	0.078	0.444	0.904
Chloroflexi	Family Anaerolinaceae; Genus SHD-231	0.13	0.20	0.21	0.27	0.29	0.23	0.03	0.072	0.119	0.208	0.882

¹ Data is shown as LS Means with standard errors

² n = 4 among groups.

Bold P-values indicate genera or family that tend to differ (P < 0.1) and significantly differ (P < 0.05) between feeding systems