Table 4.
Effect of β-mannanase supplementation in diets containing copra meal on liver health indicators in broiler chickens1)
| Items | Dietary treatments | SEM | p-value2) | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| CON | Supplemental levels of β-mannanase in 10% CM diets | ||||||||
|
|
|
||||||||
| 0% | 0.05% | 0.10% | 0.20% | Total | Linear | Quadratic | |||
| Plasma AST (U/L) | 309 | 279 | 311 | 274 | 297 | 22.9 | 0.615 | 0.810 | 0.970 |
| Plasma ALT (U/L) | 1.73 | 1.83 | 1.71 | 1.91 | 1.56 | 0.259 | 0.640 | 0.327 | 0.445 |
| Liver color score | 1.11 | 1.15 | 1.23 | 1.18 | 1.23 | 0.090 | 0.844 | 0.638 | 0.899 |
CON, corn and SBM-based control diets; CM, copra meal; SEM, standard error of means; AST, aspartate aminotransferase; ALT, alanine aminotransferase.
1)
Data are least squares means of 8 observations per treatment.
2)
Total = overall effects of treatments; Linear and quadratic effects of increasing β-mannanase supplementation in 10% CM diets without the data for CON treatment.