Table 4.
Antioxidant changes of Nile tilapia fed diets with different levels of L. caspica.
Parameters | Day 25 | Day 50 | Interaction | ||||||
---|---|---|---|---|---|---|---|---|---|
Control | 0.5% | 1% | 2% | Control | 0.5% | 1% | 2% | ||
CAT (µm/g) | 0.34 ± 0.01aA | 0.35 ± 0.006aA | 0.31 ± 0.01aA | 0.36 ± 0.01aA | 0.36 ± 0.008aA | 0.53 ± 0.05bB | 0.66 ± 0.05bB | 0.64 ± 0.04bB | P < 0.0001 |
POD (µm/g) | 1.15 ± 0.16aA | 1.35 ± 0.04aA | 2.70 ± 0.07bA | 1.82 ± 0.09bA | 1.26 ± 0.08aA | 1.48 ± 0.19aA | 2.72 ± 0.15bA | 2.27 ± 0.15bB | NS (P = 0.0568) |
SOD (U/g) | 0.037 ± 0.001aA | 0.057 ± 0.002bA | 0.063 ± 0.006bA | 0.062 ± 0.003bA | 0.034 ± 0.001aA | 0.055 ± 0.003bA | 0.053 ± 0.006bA | 0.062 ± 0.001bA | NS (P = 2056) |
Data are provided as mean ± SD (n = 9 fish per treatment). There is a statistically significant difference (P < 0.05), between the means of identical rows denoted by distinct letters. Means in rows with identical lettering do not substantially vary (P > 0.05). Significantly different (P < 0.05) are the main effects of time on the means of rows with different capital letters. SOD, superoxide dismutase; POD, peroxidase; CAT, catalase.