Table 6.
The effects of dietary curcumin on the antioxidant and immune status of O. niloticus.
| Antioxidant Activity | Immunological Indices | |||||||
|---|---|---|---|---|---|---|---|---|
| CAT (ng/mL) | GSH (ng/mL) | MDA (ng/mL) | SOD (ng/mL) | IL10 (pg/mL) | IgM (ng/mL) | Lysozymes (ng/mL) | C3 (mg/mL) | |
| CUR0 | 1.3 c | 7 c | 20 a | 105 b | 157 b | 213 b | 5 b | 92.3 b |
| CUR200 | 33.4 a | 24.6 ab | 7 b | 253 a | 238 a | 1835 a | 19.8 a | 127 ab |
| CUR400 | 34.6 a | 25.9 a | 3.5 b | 270 a | 240 a | 2075 a | 20.4 a | 178 a |
| CUR600 | 16.9 b | 16.2 b | 4.8 b | 229 a | 188 ab | 913 b | 20 a | 126 ab |
| CUR800 | 16.7 b | 15.8 bc | 2.7 b | 219 a | 167 b | 386 b | 17.6 ab | 124.18 b |
| SEM | 4.17 | 2.29 | 2.17 | 20 | 12.29 | 254 | 2.2 | 9.7 |
| Linear Reg. # | 0.14 | 0.12 | ≤0.01 | ≤0.01 | 0.44 | 0.21 | 0.02 | 0.08 |
| Quadratic Reg. # | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 |
# The regressions were considered significant at p < 0.05. Variation in the data was expressed as pooled SEM. a,b,c Mean values in the same column with different superscripts differ significantly (p < 0.05). CAT: catalase, SOD: superoxide dismutase, GSH: reduced glutathione, MDA: malondialdehyde. C3: complement 3, IL10: interleukin 10. CUR0, CUR200, CUR400, CUR600, and CUR800: basal diets supplemented with 0, 200, 400, 600, or 800 mg curcumin/kg diet, respectively.