Table 3.
Growth performance of nursery pigs fed diets supplemented with phytobiotics and antibiotics as growth promoters (Exp. 1).
| Antibiotic (AGP) | − | + | SEM | p Value 1 | ||||
|---|---|---|---|---|---|---|---|---|
| Phytobiotic (PHY) | − | + | − | + | AGP | PHY | AGP × PHY | |
| BW, kg | ||||||||
| Initial | 6.4 | 6.4 | 6.3 | 6.4 | 0.3 | 0.461 | 0.650 | 0.866 |
| d 7 | 6.7 | 6.9 | 7.0 | 6.7 | 0.4 | 0.723 | 0.664 | 0.270 |
| d 21 | 12.6 | 13.4 | 13.5 | 12.8 | 0.6 | 0.740 | 0.904 | 0.106 |
| ADG, g/d | ||||||||
| Phase 1 (d 1 to 7) | 44 B | 59 AB | 96 A | 51 AB | 17 | 0.184 | 0.367 | 0.078 |
| Phase 2 (d 7 to 21) | 424 b | 475 ab | 488 a | 430 ab | 28 | 0.709 | 0.892 | 0.047 |
| Overall | 292 b | 334 ab | 368 a | 304 b | 20 | 0.212 | 0.545 | 0.007 |
| ADFI, g/d | ||||||||
| Phase 1 (d 1 to 7) | 121 | 127 | 156 | 122 | 15 | 0.295 | 0.347 | 0.181 |
| Phase 2 (d 7 to 21) | 530 | 578 | 574 | 551 | 30 | 0.765 | 0.654 | 0.203 |
| Overall | 391 B | 421 AB | 446 A | 408 AB | 22 | 0.280 | 0.831 | 0.091 |
| G:F | ||||||||
| Phase 1 (d 1 to 7) | 0.34 | 0.46 | 0.51 | 0.41 | 0.08 | 0.410 | 0.900 | 0.163 |
| Phase 2 (d 7 to 21) | 0.80 AB | 0.82 AB | 0.85 A | 0.78 B | 0.03 | 0.846 | 0.339 | 0.096 |
| Overall | 0.75 b | 0.79 ab | 0.82 a | 0.75 b | 0.03 | 0.627 | 0.526 | 0.026 |
1 AGP and PHY factors and their interaction (n = 10 per treatment; n = 40 total). a,b Means within a row with different superscripts differ (p < 0.05). A,B Means within a row with different superscripts show a tendency to differ (0.05 ≤ p < 0.10).