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Estimations of NPP requirements of birds aged 1–42 d using the factorial method.
| Parameter | 1–14 d | 15–42 d |
|---|---|---|
| P maintenance requirements (mg/d) | 12.6 | 52.1 |
| P weight gain requirements (mg/d) | 26.1 | 68.9 |
| Net P requirement (mg/d) | 38.7 | 120.9 |
| Feed intake (g/d) | 10.6 | 27.6 |
| Factorial requirement of NPP (%) | 0.367 | 0.439 |
