Association between conventional semen variables and sperm freezability in rams

Aizhan Makhanbetova, Filipp Georgijevič Savvulidi, Martin Ptáček, Lucie Langerová, Beybit Kulataev and Nurlan Malmakov
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Aizhan Makhanbetova: Meat Sheep Breeding Department, Kazakh Research Institute of Livestock and Fodder Production, Almaty, Republic of Kazakhstan
Filipp Georgijevič Savvulidi: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sceinces (CULS) Prague, Prague, Czech Republic
Martin Ptáček: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sceinces (CULS) Prague, Prague, Czech Republic
Lucie Langerová: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sceinces (CULS) Prague, Prague, Czech Republic
Beybit Kulataev: Meat Sheep Breeding Department, Kazakh Research Institute of Livestock and Fodder Production, Almaty, Republic of Kazakhstan
Nurlan Malmakov: Meat Sheep Breeding Department, Kazakh Research Institute of Livestock and Fodder Production, Almaty, Republic of Kazakhstan

Czech Journal of Animal Science, 2025, vol. 70, issue 3, 93-101

Abstract: Assessments of routine ejaculated samples were used to evaluate the conventional semen variables (sperm motility, semen volume, sperm concentration) as initial decision-making criteria to freeze or not to freeze. However, the association of these attributes to the cryotolerance of ram sperm has not been adequately studied yet. The aim of this study was therefore to analyse if the semen volume, sperm motility and concentration can be used to predict post-thaw ram sperm motility. Additionally, in the present study we tested if the order of ejaculate sampling (first versus second, within a single collection session) and the breed of rams influenced cryopreservation outcomes.

Keywords: breed; cryopreservation; ejaculate volume; order of ejaculate collection; sperm concentration; spermatozoa motility (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:70:y:2025:i:3:id:185-2024-cjas

DOI: 10.17221/185/2024-CJAS

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