Table 4. Effects of citric acid and xylanase supplementation on AME and apparent ileal digestibility of DM and CP in broilers challenged with necrotic enteritis at 21 d of age1.
| Main effect | AME (kcal/kg) | DM (%) | CP (%) |
|---|---|---|---|
| Citric acid (g/kg) | |||
| 0 | 2,886b | 67.25 | 75.22 |
| 30 | 2,931a | 67.40 | 76.18 |
| Xylanase (mg/kg) | |||
| 0 | 2,828b | 67.77 | 75.45b |
| 200 | 2,927a | 66.61 | 77.56a |
| SEM | 23.5 | 0.620 | 1.142 |
| P-value | |||
| Citric acid | 0.006 | 0.102 | 0.085 |
| Xylanase | 0.001 | 0.311 | 0.022 |
| Citric acid X xylanase | 0.201 | 0.755 | 0.310 |
a–b
Values in the same column with different superscripts are significantly different (P<0.05).
1
Values are the mean of 6 replicates with 2 chickens per group.