Table 3.
Mean and standard error (SEM) of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) in seminal plasma and semen of mature (n = 20; 2–4 years) and senile (n = 20; ≥ 9 years) dogs.
| Parameters | Mature | Senile | p-valuea |
|---|---|---|---|
| Seminal plasma | |||
| SOD (% inhibition rate) | 63.7 ± 3.5 | 67.6 ± 3.7 | 0.454 |
| CAT (U/mL) | 15.0 ± 1.4 | 17.0 ± 1.4 | 0.250 |
| GPx (U/L) | 142 ± 3.8 | 141 ± 6.7 | 0.804 |
| Semen | |||
| SOD (% inhibition rate) | 53.1 ± 5.2 | 61.6 ± 4.7 | 0.256 |
| CAT (U/mL) | 5.3 ± 0.1 | 5.2 ± 0.1 | 0.103 |
| GPx (U/L) | 289 ± 52.7 | 251 ± 62.0 | 0.351 |
aIndependent samples t-test.
The first three parameters are of seminal plasma, and the others are of semen.