Table 1.
Effects of OptiPhos® PLUS on the performance and the utilisation of total P/digestibility phytate P in chickens for fattening
| Tria | Groups (FTU/kg feed) | Average daily feed intake (g) | Final body weight (g) | Feed to gain ratio | Mortality and culling (n.) | Tibia content in % DM | Utilisation of P (%) | Digestibility of Phytate P (%) | |
|---|---|---|---|---|---|---|---|---|---|
| Ash | P | ||||||||
| 1 | Negative control | 92b | 1,830b | 1.78b | 7 | 37.39 | 6.14c | 43.31b | 65.76b |
| 250 | 103a | 2,063a | 1.68b | 1 | 39.63 | 6.90b | 49.61a | 80.35a | |
| 500 | 106a | 2,192a | 1.61b | 2 | 41.47 | 7.32ab | 52.82a | 84.58a | |
| Positive control | 108a | 2,185a | 1.65a | 4 | 41.61 | 7.78a | 36.59c | 47.76c | |
| 2 | Negative control | 114b | 2,121b | 1.58c | 4 | 40.9c | 47.1b | ||
| 250 | 120a | 2,346a | 1.51b | 1 | 45.0b | 53.1a | |||
| 500 | 122a | 2,385a | 1.51b | 3 | 47.1a | 51.5ab | |||
| Positive control | 119a | 2,350a | 1.48a | 4 | 47.4a | 48.9ab | |||
| 3 | Negative control | 90.2c | 2,004c | 1.50a | 6 | 41.6c | 17.3c | 49.9a | 69.7c |
| 250 | 102.6b | 2,293b | 1.48ab | 8 | 45.5b | 17.5bc | 52.8a | 85.9b | |
| 500 | 104.9ab | 2,323ab | 1.47ab | 4 | 46.5b | 17.7ab | 51.8a | 95a | |
| Positive control | 108.8a | 2,425a | 1.46b | 3 | 49.4a | 17.9a | 38.7b | 56.6d | |
a,b,c Within a trial mean values within a column with a different superscript are significantly different p ≤ 0.05.