Table 3. Total tract apparent apparent digestibility of nutrients and apparent metabolisable energy (AME) content at 40–42d old broilers.
| Factors | Dry matter1 | Ether extract1 | Crude protein1 | AME (Mj/kg)1 |
|---|---|---|---|---|
| Diet type (D)2 | ||||
| A | 72.6 | 64.4AB | 66.4 | 12.89 |
| B | 72.9 | 60.2B | 68.7 | 12.67 |
| C | 72.1 | 69.0A | 70.6 | 12.78 |
| Phytogenic (Ph)3 | ||||
| No | 73.3 | 66.0 | 69.2 | 12.89 |
| Yes | 71.8 | 63.0 | 68.0 | 12.67 |
| Interactions (treatments) | ||||
| A | 74.0 | 71.4ab | 68.0 | 13.34 |
| APh | 71.2 | 57.4b | 64.8 | 12.44 |
| B | 72.9 | 60.7ab | 67.4 | 12.50 |
| BPh | 72.8 | 59.8ab | 70.1 | 12.84 |
| C | 72.8 | 66.0ab | 72.0 | 12.82 |
| CPh | 71.4 | 71.9a | 69.1 | 12.74 |
| SEM4 | 1.47 | 3.23 | 4.59 | 0.273 |
| P-value | ||||
| D | 0.874 | 0.046 | 0.669 | 0.720 |
| Ph | 0.241 | 0.270 | 0.760 | 0.350 |
| D×Ph | 0.668 | 0.020 | 0.772 | 0.097 |
1
Data shown per diet type represent treatment means from n=8 replicate cage pens (e.g. treatments A+APh). Data shown for PFA represent means from n=12 replicate cage pens (e.g. A+B+C). Within the same column means with different superscript (A, B) per diet type and (a, b, c) per interaction means (treatments), differ significantly (P<0.05).
2
Diet type (A, B and C): for each growth phase diet type A optimal for energy and protein; B and C suboptimal for protein and energy compared to A by 3 and 6% respectively.
3
Phytogenic supplementation (No=0 mg/kg diet and Yes=125 mg/kg diet).
4
Standard error of the means.