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KMID : 0900920010250010079
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Korean journal of Animal Reproduction
2001 Volume.25 No. 1 p.79 ~ p.84
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Effect of Spring and Summer Influencing Semen Characteristics, Frozen-Thawed Sperm Viability and Testosterone Concentration in Duroc Boars
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Kim Hong-Ki
Han Seong-Wook
Lee Young-Joo
Park Chang-Sik
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Abstract
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This study was carried out to investigate the effects of spring (March~May) and summer (June~August) influencing semen characteristics, frozen-thawed sperm viability and serum testosterone concentration in Duroc boars. Results of this study were as follows: 1. There were no significant differences in the semen volume, pH and sperm concentration of Duroc boars between spring and summer. 2. Sperm motility and normal acrosome of raw semen in Duroc boars did not differ significantly between spring and summer. However, motility and normal acrosome of frozen-thawed sperm were higher in spring season than in summer season(P＜0.05). 3. Serum testosterone concentrations in Duroc boars were 2.15 ng/mell in spring and 0.65 ng/mell in summer. Serum testosterone concentrations in spring were higher thin those in summer (P＜0.05). 4. In conclusion, when serum testosterone concentrations in Duroc boars were higher, frozen-thawed sperm viability were higher.
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KEYWORD
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Semen characteristics, Sperm viability, Testosterone, Duroc boars
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