Table 2. Effects of dietary crude protein level with protease supplementation on growth performance in growing pigs.
| Item | HP | LP | SE | p-value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PT 0 | PT 150 | PT 300 | PT 0 | PT 150 | PT 300 | CP | Protease | CP × protease | ||
| ADG (g/d) | 511 | 523 | 555 | 495 | 526 | 576 | 12 | 0.958 | 0.068 | 0.645 |
| ADFI (g/d) | 1,350 | 1,415 | 1,394 | 1,374 | 1,380 | 1,386 | 44 | 0.949 | 0.950 | 0.969 |
| G:F | 0.361 | 0.370 | 0.386 | 0.352 | 0.375 | 0.405 | 0.010 | 0.863 | 0.074 | 0.468 |
Each value is the mean value of 6 replicates (1 pig/cage; 6 × 6 latin square).
HP, high crude protein (17.3%); LP, low crude protein (15.1%); CP, crude protein; PT, protease (ppm); ADG, average daily gain; ADFI, average daily feed intake; G:F, feed efficiency.