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EFFECTS OF CHANGES IN PHOTOPERIOD ON FREEZABILITY OF RAM SPERMATOZOA.

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

Type of article: Article

Summary

THE EFFECT OF PHOTOPERIOD ON FREEZABILITY OF RAM SPERMATOZOA WAS EVALUATED IN EJACULATES COLLECTED OVER 52 WEEKLY PERIODS FROM TWO GROUPS OF RAMS. THE SURVIVAL OF SPERMATOZOA AFTER FREEZING OF 0.5 MILLIL STRAWS AT 15 K/MIN, STORAGE IN LIQUID NITROGEN, AND THAWING IN A WATER BATH AT 312 K (39 DEG C) WAS EVALUATED AS FREEZE-THAW MOTILITY PERCENTAGE AND RATING AND AS A CRYOSURVIVAL PERCENTAGE. FREEZE-THAW MOTILITY PERCENTAGE WAS HIGHEST DURING THE DECREASING PHOTOPERIOD, REGARDLESS OF SEASON. CRYOSURVIVAL WAS POSITIVELY CORRELATED WITH EJACULATE OSMOLALITY.

Details

  • Original title: EFFECTS OF CHANGES IN PHOTOPERIOD ON FREEZABILITY OF RAM SPERMATOZOA.
  • Record ID : 1984-2122
  • Languages: English
  • Source: Cryobiology - vol. 20 - n. 6
  • Publication date: 1983

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