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Freezing stallion semen with the new Caceres extender improves post thaw sperm quality and diminishes stallion-to-stallion variability

  • a Morillo Rodríguez
  • , C Ortega Ferrusola
  • , B Macías García
  • , Jane Morrell
  • , H Rodríguez Martínez
  • , JA Tapia
  • , FJ Peña

    Publikation: Bidrag till tidskriftArtikel i vetenskaplig tidskriftPeer review

    Sammanfattning

    Ejaculates from 7 stallions were split and simultaneously frozen in three different extenders, INRA 96 egg yolk glycerol, Ghent and the newly developed extender Caceres. After thawing, samples were evaluated for motility (CASA system) sperm membrane integrity and early membrane changes (YoPro-1/Eth staining), acrosome integrity (FICT-PNA), and mitochondrial membrane potential (JC-1) (flow cytometry). Samples frozen in Caceres extender consistently showed the best results in post-thaw motility (increases ranging from 11 to 17%, p < 0.05) and velocity (p < 0.05), membrane integrity (increases ranging from 11 to 14%, p < 0.05) and mitochondrial membrane potential (p < 0.05). It is concluded that this new extender should be included in a freezeability test to determine the best extender for each individual. (C) 2011 Elsevier B.V. All rights reserved.
    OriginalspråkEngelska
    Sidor (från-till)78-83
    Antal sidor6
    TidskriftAnimal Reproduction Science
    Volym127
    Nummer1-2
    DOI
    StatusPublicerad - 2011

    Nyckelord

    • Stallion
    • Frozen sperm
    • Flow cytometry
    • CASA

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