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Short communication: Progressive motility of frozen–thawed canine semen is highest five minutes after thawing
Authors:S Karger  B Geiser  M Grau  W Heuwieser  SP Arlt
Affiliation:Clinic for Animal Reproduction, Faculty of Veterinary Medicine, Freie Universit?t, Berlin, Germany
Abstract:Progressive motility is usually estimated by visual inspection using a light contrast microscope at X 100 immediately after semen collection or immediately after thawing frozen semen. Standard operating procedures have never been established for this test. The objective of this experiment was to examine time‐dependent changes of motility after thawing cryopreserved canine semen. Semen of 35 dogs was collected, and volume, concentration, progressive motility, morphology, membrane integrity and HOS test were evaluated. For cryopreservation, CaniPRO® Freeze A&B was used. Semen was thawed and diluted using CaniPRO® culture medium. After thawing, semen was evaluated as before. In addition, every sample was evaluated for progressively motile sperm cells 0, 5, 20 and 60 min after thawing. Progressive semen motility was significantly highest five minutes after thawing.
Keywords:cryopreservation  dogs  freezing  motility  semen  thawing
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