Table 8. Effect of supplemental protease on bacteria count 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
1wk (g/CFU)
E. coli	5.72	5.78	5.52	5.43	0.35	5.75	5.48	5.62	5.60	0.442	0.956	0.838
Lactobacillus	8.87	8.64	8.77	8.79	0.21	8.76	8.78	8.82	8.72	0.927	0.630	0.559
2wk (g/CFU)
E. coli	6.11	6.61	6.18	6.50	0.16	6.36	6.34	6.15	6.56	0.906	0.023	0.594
Lactobacillus	9.45	9.87	9.63	9.61	0.29	9.66	9.62	9.54	9.74	0.885	0.489	0.456

Basal, diet containing 18.78% CP; Low, diet containing 16.92% CP.
PT0, non-supplementation of protease; PT10, supplementation of 0.1% protease.
Abbreviation: CP, crude protein; PT, protease; HP, high protein; LP, low crude protein; CFU, colony-forming unit; E. coli, Escherichia coli.