Table 8.

The ordinary least squares regression (OLS) estimates of animal performance impact on methane production (CH₄) in dairy and beef cattle production.

	Model 1	Model 2	Model 3	Model 4
	Dairy Cattle	Beef Cattle	Dairy Cattle	Beef Cattle
Variable	CH4 Production	CH4 Production	CH4 Production	CH4 Production
DMI	18.53	18.93	-	-
	(p < 0.001)	(p < 0.001)
GEI	-	-	62.2	40.93
			(p < 0.001)	(p < 0.001)
Intercept	42.37	22.33	27.76	47.16
R-Square	44.42%	36.61%	49.92%	74.10%
No. of Obs	121	74	72	34
Parameters	2	2	2	2
MSE	5113.5	4425.8	4418.1	2286.8

Note: Obs. = observations; DMI = dry matter intake; DEI = gross energy intake; MSE = mean squared errors.