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Development of Semen Extenders by Assessment of Sperm Viability in Miniature-Pig Semen  

Lee S. H. (College of Animal Resource Science, Kangwon National University)
Cheong H. T. (College of Animal Resource Science, Kangwon National University)
Yang B. K. (College of Animal Resource Science, Kangwon National University)
Park C. K. (College of Animal Resource Science, Kangwon National University)
Publication Information
Reproductive and Developmental Biology / v.29, no.4, 2005 , pp. 247-252 More about this Journal
Abstract
The purpose of this study was to assess sperm quality during in vitro storage of miniature-pig semen in order to determine which extender should be used and how extender can be diluted for in vitro storage of miniature-pig semen. Freshly ejaculated miniature-pig's semen was diluted with same volumes of Beltsville Thawing Solution (BTS), Androhep, Modena, Mulberry III and modified-Modena extenders. Sperm quality was evaluated by examining viability, motility, abnormality, acrosome intactness, intensity and capacitation status by chlorotetracycline (CTC) staining. Sperm motility decreased with storage period prolonged and differences among BTS, Androhep, Modena and Mulberry III were apparent On Day 1, approximately 80% of the sperm were motile, but motility decreased to $40\%$ at Day 7. During the 7 days of storage, sperm survival in modified-Modena B extender was higher than another extenders. However, it was not differ significantly among other extenders. The percentage of F and B patterns were not differ significantly among the extenders. However, F pattern in modified-Modena B extender was slightly higher until 3 days of storage than that of Modena extender, modified-Modena A extender and modified-Modena C extender. The percentage of AR patterns in modified-Modena B extender was slightly lower, but did not differ significantly among other extenders. The results of present study suggest that modified-Modena B was effective as new extender for in vitro storage of miniature-pig semen.
Keywords
Miniature-pig; Semen extender; Sperm viability Hoechst 33258; CTC pattern;
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