Table 6. Effect of supplemental protease on blood profiles with different CP levels in weaned pig

Variables	Basal1)		Low		SE	CP		PT2)		p-value
	0%	0.1%	0%	0.1%		HP	LP	0	10	CP	PT	CP × PT
Total protein (g/dL)	5.47	5.40	4.97	5.37	0.24	5.44	5.17	5.22	5.39	0.285	0.500	0.348
BUN (mg/dL)	8.17	7.33	7.00	5.83	0.42	7.75	6.42	7.59	6.58	0.005	0.027	0.695
IgG (mg/dL)	370.0	389.3	368.7	307.3	50.61	379.7	338.0	369.3	348.3	0.420	0.683	0.435

Basal, diet containing 18.78% CP; Low, diet containing 16.92% CP.
ePT0, non-supplementation of protease; PT10, supplementation of 0.1% protease.
CP, crude protein; PT, protease; HP, high protein; LP, low crude protein; BUN, blood urea nitrogen; IgG, immunoglobulin G.