Table 7.
Effect of dietary BLE on antioxidant enzyme activities of breast meat of broilers.
| Diet treatment3 |
P value |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Item | CTR | BLE1 | BLE2 | BLE3 | BLE4 | BLE5 | SEM1 | Linear2 | Quadratic2 |
| T-AOC (U/mg prot) | 0.095c | 0.117b,c | 0.174a–c | 0.182a,b | 0.212a | 0.193a,b | 0.012 | 0.001 | 0.212 |
| CAT (U/mg prot) | 0.334 | 0.514 | 0.379 | 0.378 | 0.347 | 0.381 | 0.024 | 0.568 | 0.555 |
| SOD (U/mg prot) | 20.669b | 21.939a | 21.061a,b | 21.462a,b | 20.830a,b | 20.505b | 0.163 | 0.251 | 0.052 |
| GSH (mg/g prot) | 4.808 | 5.042 | 5.577 | 5.173 | 5.087 | 5.182 | 0.112 | 0.489 | 0.211 |
| GSH-Px (U/mg prot) | 37.397b | 38.906a,b | 40.287a,b | 41.261a,b | 39.877a,b | 42.457a | 0.557 | 0.011 | 0.641 |
T-AOC: Total antioxidant capacity; CAT: Catalase; SOD: Superoxide dismutase; GSH: glutathione; GSH-Px: Glutathione S-transferase.
a–c
Means within the same row with no common superscript differ significantly (P < 0.05).
1
Standard error of the means.
2
Orthogonal polynomials were used to evaluate linear and quadratic responses to the levels of BLE treatment.
3
CTR: basal diet; BLE1, BLE2, BLE3, BLE4, and BLE 5 group, basal diet adding 1.0, 2.0, 3.0, 4.0, and 5.0 g/kg BLE, respectively.