Table 5. Bacterial and archaeal Shannon Diversity index, dry matter intake, and methane emissions from Hanwoo steers linear regression analyses

Item	Microbes	Group	Coefficient	Lower	Upper	Goodness of fit	p-value	r2
DMI (kg/d)	Bacteria	SF	0.38	4.24	6.58	5.41	0.07	0.448
		TMR	−0.012	4.72	5.17	4.95	0.71	0.025
	Archaea	SF	0.14	1.64	3.34	2.49	0.31	0.167
		TMR	0.1	1.79	3.09	2.44	0.30	0.176
CH4 (g/d)	Bacteria	SF	0.013	0.67	4.30	2.48	0.035	0.552
		TMR	0.00043	4.35	5.48	4.91	0.78	0.014
	Archaea	SF	0.0078	−0.09	2.02	0.97	0.031	0.568
		TMR	0.0063	−0.31	2.67	1.18	0.15	0.314
MEF (kg CH4/head/year)	Bacteria	SF	0.036	1.07	4.40	2.73	0.04	0.531
		TMR	0.0012	4.41	5.43	4.92	0.78	0.014
	Archaea	SF	0.02	0.14	2.25	1.20	0.064	0.460
		TMR	0.017	−0.04	2.63	1.29	0.15	0.314

DMI, dry matter intake; SF, separate feeding concentrate and forage; TMR, total mixed ration; CH₄, methane; MEF, methane emission factor.