Table 10. The effect of replacement dietary of animal protein with insect meal (Hermetia illucens larvae) and additive the protease on nitrogen utilization in growing pigs (Exp2)

Items (g/d)	Protein source		Protease		SE	p-value
	PO	HIL	−	+		D	P	D × P
Daily balance of N
N intake	42.4	41.7	41.9	42.1	0.8	0.648	0.923	0.853
Fecal N excreted	8.0	8.6	8.5	8.1	0.1	0.026	0.167	0.964
Urine N excreted	4.7	6.0	6.4	4.3	0.4	0.037	0.002	0.134
Retained N	29.8	27.1	27.1	29.8	0.9	0.115	0.117	0.452
Total N excreted	12.6	14.6	14.9	12.3	0.4	0.003	0.001	0.142
N retention rate	69.7	64.7	64.0	70.4	1.2	0.018	0.003	0.185

PO, poultry offal diet; HIL, Hermetia illucens larvae diet; D, diet; P, protease; N, nitrogen.