Studies on Liquid Preservation and Potential Fertility of Boar Semen

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Birsa Agricultural University, Ranchi
1. Kiev dilutor proved to be the most suitable extender for preservation of boar semen at 15 - 20°c. 2. Both Kiev and BTS dilutors maintained acrosome integrity, sperm motility and live sperm percentage more effectively as compared to BL-1 up to 72 hours of preservation. 3. Gentamycin was most effective against both Gram +ve and Gram -ve bacterial genera, isolated from boar ejaculates 4. Penicillin and streptomycin which are commonly added to boar semen extender were observed to be least effective against Gram +ve and Gram -ve bacteria. 5. Quantitative estimation of transaminases, lact dehydrogenase and alkaline phosphatase can serve as perfect indicator for assessing sperm quality during preservation. 6. Preservation time and extenders used for diluting boar semen had no effect on litter size. 7. Artificial insemination in pigs gave 69.11 per cent farowing rate with freshly diluted semen and 61.62, 53.02 and 51.28 per cent respectively after 24, 48 and 72 hours of preservation.