Table 7. The effect of replacement dietary of animal protein with insect meal (Hermetia illucens larvae) and additive the protease on the fecal gas emission in growing pigs (Exp1)

Items (ppm) Protein source Protease SE p-value
PO HIL + D P D × P
NH3
 24 h 12.3 13.0 12.8 12.5 0.9 0.156 0.632 0.213
 48 h 20.4 20.4 22.8 18.0 2.6 0.671 0.366 0.608
H2S
 24 h 4.1 5.3 4.9 4.4 0.7 0.082 0.431 0.749
 48 h 9.7 11.1 11.1 9.7 1.1 0.236 0.247 0.804
PO, poultry offal diet; HIL, Hermetia illucens larvae diet; D, diet; P, protease; SE, standard error; NH3, ammonia; H2S, hydrogen sulfide.