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    Título
    Optimization of Glycerol Concentration and Freezing Rate in the Cryopreservation of Ejaculate From Brown Bear (Ursus arctos)
    Autor
    Paz Cabello, Paulino deAutor de la institución ORCID
    Álvarez Rodríguez, Manuel
    Nicolás, M.
    Álvarez García, MercedesAutor de la institución ORCID
    Chamorro Álvarez, César ÁngelAutor de la institución ORCID
    Barragán Santos, Santiago
    Martínez Pastor, FelipeAutor de la institución ORCID
    Anel Rodríguez, LuisAutor de la institución ORCID
    Facultad/Centro
    Facultad de Ciencias Biologicas y Ambientales
    Área de conocimiento
    Biologia Celular
    Datos de la obra
    Reproduction in Domestic Animals, 2012, vol. 47, n. 1
    Editor
    John Wiley & Sons
    Fecha
    2012-02
    Descripción física
    P. 105-112
    Abstract
    In order to establish a semen bank for the endangered Cantabrian brown bear, we tested five glycerol concentrations and three freezing rates for electroejaculated semen. Electroejaculation was performed on nine males. Semen was diluted in TES–Tris–Fructose (20% egg yolk, 2% EDTA, 1% Equex) with 2%, 4%, 6%, 8% or 10% glycerol and frozen at −10, −20 or −40°C/min. Before and after cryopreservation, samples were analysed for motility (CASA), viability and acrosomal status (flow cytometry). Pre‐freezing results showed that glycerol concentration had no significant effect on total motility or progressive motility, but it significantly decreased VCL, ALH, viability and acrosomal status (p < 0.05). After thawing, sperm motility was higher at extender with 4%, 6% and 8% glycerol, but only at 4% and 6% glycerol for viability and acrosomal status. For 4% and 6% glycerol, freezing rates did not have significant effects. The curve fitting gave an estimate of the optimal glycerol concentration, with all the optimal values for every parameter between 6% and 7% glycerol falling. We propose using 6% glycerol and a freezing velocity of −20°C/min for freezing brown bear ejaculated spermatozoa.
    Materia
    Veterinaria
    Palabras clave
    Glicerina
    Criopreservación
    Esperma
    Osos pardos
    Ursus arctos
    Idioma
    eng
    Tipo documental
    info:eu-repo/semantics/article
    Peer review
    SI
    URI
    http://hdl.handle.net/10612/10663
    Versión del editor
    https://onlinelibrary.wiley.com/doi/full/10.1111/j.1439-0531.2011.01808.x
    Aparece en las colecciones
    • Artículos de revista (post-print) [2050]
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