Table 4.

Fitting performance of the dry matter intake-based (DMI-B) models (CH₄ yield; g/kg DMI) fitted with the variables selected from all the available data by the conventional method and machine learning methods.

	Conventional	glmmLasso	LASSO	SCAD	RF-B
BIC	894	889	969	889	1095
Reduction of BIC	–	5	− 75	5	− 201
AIC	874	856	868	859	1031
Reduction of AIC	–	18	6	15	− 157
Number of variables	2	9	25	6	17

See the notes of Table 1.