Table 5. Effects of citric acid and xylanase supplementation on digestive enzyme and brush border enzyme activities in the jejunum of broilers challenged with necrotic enteritis at 21 d of age1.
| Main effect | Digestive enzymes |
Brush border enzymes |
||
|---|---|---|---|---|
| α-Amylase | Trypsin | Maltose | Sucrase | |
| Citric acid (g/kg) | ||||
| 0 | 828.2 | 229.6 | 315.2 | 73.38 |
| 30 | 835.7 | 223.7 | 287.5 | 69.85 |
| Xylanase (mg/kg) | ||||
| 0 | 993.3a | 238.6a | 399.0 | 60.92b |
| 200 | 918.8b | 201.7b | 305.4 | 81.77a |
| SEM | 35.24 | 12.02 | 11.25 | 3.850 |
| P-value | ||||
| Citric acid | 0.625 | 0.254 | 0.325 | 0.215 |
| Xylanase | 0.020 | 0.026 | 0.125 | 0.034 |
| Citric acid×xylanase | 0.436 | 0.621 | 0.226 | 0.905 |
a–b
Values in the same column with different superscripts are significantly different (P<0.05).
1
Values are the means of 6 replicates with 2 chickens per group.