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Studies on the substances in egg yolk which affect viability and metabolism of spermatozoa. V. Substances protecting against cold shock and freezing injury

, : Studies on the substances in egg yolk which affect viability and metabolism of spermatozoa. V. Substances protecting against cold shock and freezing injury. Japanese Journal of Zootechnical Science 43(8): 417-423

A 5% solution of acetone-soluble egg yolk lipids preserved 88.3% of pre-freezing motility of goat spermatozoa v 77.3% preserved by 10% egg yolk. Corresponding figures for bull spermatozoa were 90.7 v 94.0%. Lipovitellenin and alpha - and beta -lipovitellin were effective cryoprotectants for goat, bull and horse spermatozoa.


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