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.