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    Título
    DNA Status on Thawed Semen from Fighting Bull: A Comparison Between the SCD and the SCSA Tests
    Autor
    Martínez Pastor, FelipeAutoridad BuleriaORCID
    Fernández Santos, María Rocío
    Domínguez Rebolledo, Álvaro Efrén
    Esteso, Milagros
    Garde López-Brea, Julián
    Facultad/Centro
    Facultad de Ciencias Biologicas y Ambientales
    Área de conocimiento
    Biologia Celular
    Datos de la obra
    Reproduction in Domestic Animals, 2009, vol. 44, n. 3
    Editor
    John Wiley & Sons
    Fecha
    2009-06
    Abstract
    The assessment of sperm chromatin status is compulsory in a complete spermiogram. Here we applied the sperm chromatin structure assay (SCSA) and the sperm chromatin dispersion (SCD) test to assess the chromatin status of three fighting bulls. Cryopreserved semen (two straws/bull) were analysed by duplicate after thawing and after 6 h at 37°C with and without oxidative stress (1 mm FE2+). Results (SCD: percentage of spermatozoa with halo; SCSA: SD‐DFI, %DFI and HDS) were analysed for differences between bulls and treatments, sensitivity and specificity (receiver operating characteristic curves) and repeatability (repeatability coefficients as 2SD of duplicate differences).%DFI for the three bulls was below 2% at 0 h, indicating no risk for fertility according to previous reports. It increased slightly for two of the bulls after FE2+ treatment (%DFI < 5%) and more pronouncedly for the other bull (C, %DFI∼10%), which merits further investigation. SCD rendered higher percentage of halos for bull C, but could not discriminate between samples with and without oxidizing treatment (AUC: 0.52). SCSA (%DFI) showed a high discriminating ability between treatments (AUC: 0.96). The repeatability coefficient was also higher for SCD (5.9) than for %DFI (1.8), indicating lower repeatability for SCD. Overall, %DFI might be the most useful parameter for assessing sperm chromatin on fighting bull. SCD might yield different information than SCSA, hence further research is warranted.
    Materia
    Veterinaria
    Palabras clave
    Toros de lidia
    Semen
    Cromatina
    Estrés oxidativo
    Peer review
    SI
    URI
    http://hdl.handle.net/10612/10291
    Versión del editor
    https://onlinelibrary.wiley.com/doi/full/10.1111/j.1439-0531.2008.01098.x
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