Table 2.

Daily balance of gross energy (GE) and concentration of digestible and metabolizable energy (DE and ME) in basal diet or diet with 0.2 g/kg proteases for pigs (Exp. 1)

Item	Control	CC protease	SEM	p-value
Daily balance of GE (MJ/d)
GE intake	14.1	14.0	0.43	0.87
GE in feces	2.1	1.7	0.09	0.02
GE in urine	0.45	0.40	0.06	0.58
DE in diet (MJ/kg)
As-fed basis	14.2	14.5	0.06	0.01
Dry matter basis	15.8	16.3	0.07	<0.01
ME in diet (MJ/kg)
As-fed basis	13.7	14.0	0.10	0.05
Dry matter basis	15.3	15.8	0.11	0.01
ME/DE	0.96	0.97	0.01	0.63

CC protease, coated compound proteases; SEM, standard error of the mean.

ME was calculated as GE intake - fecal energy – urinary energy without considering methane loss.