Table 4. Validation of prediction equations developed on the chemical compositions (%) in feed ingredients using a total of 2,048 samples from NRC (2012) and present study

Item	R2	RMSE	MBE
Cereal grains (n = 428)
Present study	0.420	95.7	16.3
NRC (2012)	0.401	105.6	−126.0
INRA (2004)	0.397	106.5	−126.4
Cereal by products (n = 592)
Present study	0.358	122.2	−34.0
NRC (2012)	0.419	152.4	−281.4
INRA (2004)	0.416	139.2	−213.3
Oilseed meal (n = 1,064)
Present study	0.289	126.3	12.3
NRC (2012)	0.218	176.8	−214.8
INRA (2004)	0.239	176.0	−133.4