Methanogen Diversity in Indigenous and Introduced Ruminant Species on the Tibetan Plateau

Table 3

Abundance of Methanomassiliicoccaceae and Methanobrevibacter (log copy gene numbers g⁻¹ ng DNA) in ruminant species.

Target	Yak	Cattle	Crossbreed sheep	Tibetan sheep	SE
Methanomassiliicoccaceae 1	4.31	4.30	4.30	4.60	0.04
Methanomassiliicoccaceae 2	4.44	4.36	4.39	4.62	0.04
Methanobrevibacter	3.62	3.46	3.18	3.32	0.05

Mean values within a row with a different superscript are significantly different ().
SE: standard error.