Table 1 Growth factors of 23 wk old castrated pigs in control and feed withdrawal (FW) treatments.
| Â | Â | Treatments | Â | Probability |
|---|---|---|---|---|
Factor | Control | FWx1 | FWx4 | value |
n | 9 | 9 | 9 | Â |
Initial weight (Wt, kg) | 13.7 ± 0.8 | 13.4 ± 0.4 | 14.6 ± 0.6 | 0.4057 |
Wt at 28 d kg | 34.0 ± 1.8 | 36.0 ± 1.1 | 36.5 ± 1.1 | 0.4170 |
Wt at 56 d kg | 63.7 ± 2.5 | 66.9 ± 1.8 | 67.6 ± 2.1 | 0.4037 |
Wt at 84 d kg | 96.6 ± 2.8 | 100.3 ± 2.0 | 101.2 ± 2.9 | 0.4202 |
Wt at 124 d kg | 135.8 ± 3.1 | 138.6 ± 1.9 | 140.6 ± 3.2 | 0.4122 |
Total wt gain kg | 122.0 ± 2.6 | 125.0 ± 1.7 | 126.4 ± 3.0 | 0.4476 |
ADG kg | 1.02 ± 0.02 | 1.05 ± 0.02 | 1.06 ± 0.02 | 0.4785 |
Total feed intake kg | 339.2 ± 10.5 | 346.1 ± 8.3 | 358.3 ± 12.1 | 0.4355 |
Dry feed intake kg/d | 2.8 ± 0.08 | 2.9 ± 0.07 | 3.0 ± 0.09 | 0.4095 |
Gain: feed | 0.36 ± 0.01 | 0.36 ± 0.01 | 0.36 ± 0.01 | 0.7698 |