Table 2.

Comparison in the methane production and growth indexes of wild-type and mutant M. ruminantium

Indexes	Treatments		SEM	P-Value
	WT	KO
The max amount of bacteria (OD value)	0.200	0.090	0.003	< 0.001
The maximum specific growth rate	0.017	0.008	0.001	< 0.001

WT wild-type, KO knock-out, SEM standard error of the mean