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首页> 外文期刊>Andrologia >Effects of season on boar semen parameters and antioxidant enzymes in the south subtropical region in Brazil
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Effects of season on boar semen parameters and antioxidant enzymes in the south subtropical region in Brazil

机译：季节对巴西南亚热带地区野猪精液参数和抗氧化酶的影响

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Summary Although boar semen productivity is affected by seasonality, its effects are not equal among different regions which raise concerns regarding the profitability of boar stud farms. Therefore, the goals of this study were (i) to evaluate the seasonal effect on semen production in a commercial boar stud farm located in a subtropical climate region and (ii) to verify whether the activities of superoxide dismutase and glutathione peroxidase in spermatozoa and seminal plasma were associated with seminal traits of fresh and cooled semen. Nine boars were collected twice per season, and routine seminal parameter analyses were performed together with superoxide dismutase and glutathione peroxidase activities in seminal plasma and spermatozoa. Despite a reduction in sperm concentration in spring and summer, most seminal parameters were constant year‐round. Temperature–humidity index was higher in the summer compared to spring, autumn and winter ( p? ? .05). Superoxide dismutase activity in spermatozoa was increased in summer compared to autumn and winter ( p? ? .05). The activities of both enzymes in seminal plasma and spermatozoa glutathione peroxidase remained unaltered throughout the seasons. In conclusion, seasonality showed little influence in overall boar seminal parameters despite microclimatic differences among seasons, and spermatozoa collected during summer increased superoxide dismutase activity.
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