title: Studies on the preservation of raw and frozen horse semen.
abstract: Retention of high motility of horse spermatozoa preserved at 4 degrees C was improved by a semen extender. Raw semen preserved for 2 to 8 hr at 4 degrees C gave an average conception rate of 67-3% but preservation for 1 to 2 days gave an extremely low conception rate. The conception rate from deep-frozen semen during 8 years was 56-3%.
mesh_terms: D000818:Animals; D005615:Freezing; D006736:Horses; D008297:Male; D011309:Preservation, Biological / Q000379:methods; D012661:Semen; D013081:Sperm Motility; D013997:Time Factors