Superoxide dismutase activity in seminal plasma and semen quality of stallions

The aim of this study was to study the activity of the antioxidant enzyme superoxide dismutase (SOD) in the seminal plasma of stallions with high and low progressive motility (PP) of spermatozoa. In stallions with high progressive sperm motility the activity of superoxide dismutase in the seminal plasma was higher and significantly differed from the SOD activity in the group of stallions with low progressive sperm motility (P