In this study, motility and oxidative-antioxidant capacity (thiobarbituric acid-reactive substance level [TBARS], superoxide dismutase [SOD], catalase [CAT] and glutathione reductase [GR]) of beluga sturgeon (Huso huso) sperm, stored for 6 days at -80°C, were evaluated. After 2 days of storage, sperm motility was significantly decreased (no motile sperm were observed after 6 days of storage; p < .05), while TBARS and SOD values were significantly increased (p < .05). CAT and GR activities did not show significant changes among storage times (p > .05). Furthermore, all investigated parameters showed a significant difference between semen stored at 4°C (control) and -80°C during in vitro storage (p < .05). Data from this work can potentially be useful in sturgeon sperm cryobanking.
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