Table 3. Effect of dietary protease supplementation on nutrient digestibility in weanling pigs fed a low-CP diet.
| Items | CON1) | LP | PLP1 | PLP2 | SEM | p-value |
|---|---|---|---|---|---|---|
| Phase 1 (0–14 days) | ||||||
| Dry matter | 77.28 | 76.71 | 78.11 | 78.17 | 0.725 | 0.373 |
| Nitrogen | 69.26 | 70.98 | 73.26 | 72.17 | 1.008 | 0.059 |
| Gross energy | 74.89 | 75.02 | 75.79 | 75.42 | 0.670 | 0.814 |
| Phase 2 (15–35 days) | ||||||
| Dry matter | 74.87 | 74.89 | 75.26 | 76.81 | 1.187 | 0.625 |
| Nitrogen | 67.85 | 68.66 | 68.56 | 69.88 | 1.838 | 0.888 |
| Gross energy | 72.97 | 72.40 | 72.62 | 74.38 | 1.340 | 0.727 |
1)
CON, basal diet; LP, CON − 0.3% CP; PLP1, LP + 0.05% protease; PLP2, (CON − 0.50% CP) + 0.05% protease.
a,b
Means groups that have different superscripts in the same row are distinct (p < 0.05).
CP, crude protein; LP, low protein.