Table 7. Particular bacterial species and methanogen population in steers differing breed (n = 49) in HE.

Variable	Breed			P value
	Angus	Charolais	Hybrid
	Mean ± SEM	Mean ± SEM	Mean ± SEM
	(n = 5)	(n = 19)	(n = 25)
Total bacteria	8.53E10±4.47E11	1.34E11±2.29E11	4.20E11±2.00E11	0.59
Succinivibrio sp. (%)	0.07±1.13	1.23±0.58	0.08±0.51	0.31
Eubacterium sp. (%)	0.41±0.12	0.08±0.06	0.12±0.05	0.05
Robinsoniella sp. (%)	0.005±0.008	0.01±0.004	0.002±0.004	0.32
Total Methanogens	2.87E7±1.15E7	2.07E7±5.91E7	1.28E7±5.15E7	0.36