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THE EFFECTS OF RAPID COOLING (COLD SHOCK) OF RAM SEMEN, PHOTOPERIOD, AND EGG YOLK IN DILUENTS ON THE SURVIVAL OF SPERMATOZOA BEFORE AND AFTER FREEZING.

Author(s) : FISER P. S., FAIRFULL R. W.

Type of article: Article

Summary

RAPID COOLING OF EXTENDED SEMEN FROM 303 TO 288 K (30 TO 15 DEG C) HAD LITTLE OR NO EFFECT ON SURVIVAL BEFORE OR AFTER FREEZING ; RAPID COOLING FROM 303 K TO 283, 278 OR 273 K (10, 5 OR 0 DEG C) WAS ACCOMPANIED BY A PROGRESSIVE DECREASE IN PERCENTAGE OF MOTILE SPERMATOZOA AND OF INTACT ACROSOMES BEFORE FREEZING AND A DECREASE IN PERCENTAGE OF MOTILE SPERMATOZOA AFTER FREEZING. THE ABILITY OF SPERMATOZOA MOTILE AFTER COLD SHOCK TO SURVIVE FREEZING AND THAWING WAS NOT SIGNIFICANTLY AFFECTED BY THE TEMPERATURE TO WHICH SEMEN WAS COOLED. PERCENTAGE OF MOTILE SPERMATOZOA AFTER COOLING AND AFTER FREEZING WAS GENERALLY HIGHER WHEN THE SEMEN WAS COLLECTED DURING A DECREASING PHOTOPERIOD THAN DURING AN INCREASING PHOTOPERIOD.

Details

  • Original title: THE EFFECTS OF RAPID COOLING (COLD SHOCK) OF RAM SEMEN, PHOTOPERIOD, AND EGG YOLK IN DILUENTS ON THE SURVIVAL OF SPERMATOZOA BEFORE AND AFTER FREEZING.
  • Record ID : 1987-2029
  • Languages: English
  • Source: Cryobiology - vol. 23 - n. 6
  • Publication date: 1986

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