Table 3.
Effect of dietary astaxanthin (ASTA) supplementation on antioxidant enzyme activities and lipid peroxidation levels in the plasma of laying hens.
| Items | ASTA levels/(mg/kg) |
SEM |
P value |
||||
|---|---|---|---|---|---|---|---|
| 0 | 25 | 50 | 100 | Linear | Quadratic | ||
| GSH-Px (U/mL) | 417.13b | 438.16a | 440.46a | 438.05a | 2.43 | <0.01 | <0.01 |
| MDA (nmol/mL) | 7.87a | 6.31b | 2.85c | 1.92d | 0.52 | <0.01 | 0.30 |
| SOD (U/mL) | 311.39b | 334.55a,b | 348.33a | 346.47a | 5.37 | 0.011 | 0.20 |
| T-AOC (U/mL) | 0.34b | 0.43a | 0.46a | 0.45a | 0.02 | <0.01 | 0.02 |
a,bMeans within a row with no common superscripts differ significantly (P < 0.05).
Abbreviations: GSH-Px, glutathione peroxidase; MDA, malondialdehyde; SOD, superoxide dismutase; T-AOC, total antioxidant capacity.