Does cleansing of frozen-thawed bull semen before assessment provide samples that relate better to potential fertility?

Theriogenology
Triin HallapH Rodriguez-Martinez

Abstract

The present study estimated, in vitro, the influence of two cleansing methods on sperm parameters post-thaw and their relation to the fertility of the frozen-thawed semen after AI. Frozen semen from six 1-year-old Swedish Red and White dairy bulls with a range in fertility (as 56d-Non-Return Rates, i.e., 56d-NRR) of 62.2-70.7% among batches was tested, using three batches of semen per bull. From each batch, individual straws were analyzed immediately after thawing (PT, control) or pooled and subjected to a swim-up procedure (SU) or washing by centrifugation/re-suspension (W) prior to in vitro assessments. Subjective and computerized measurements of sperm motility and of concentration, morphology, and membrane integrity were recorded. SU provided spermatozoa with significantly better motility, acrosome-, midpiece- and tail morphology and membrane integrity compared to either control or W treatment. Significant, albeit low, correlations among single sperm parameters and NRR were found (after PT for tail abnormalities (r = 0.49) and average path velocity, VAP (r = 0.47), after SU for total sperm motility with CASA (r = 0.50) and after W only for non-linear motility (r = -0.69)). SU of frozen-thawed bull semen is a simple preparati...Continue Reading

References

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Citations

Jul 16, 2014·Theriogenology·Bruna Marcele OliveiraEneiva Carla Carvalho Celeghini
Sep 4, 2010·Veterinary Medicine International·J M Morrell, H Rodriguez-Martinez
Jul 3, 2009·The Journal of Reproduction and Development·Jane M MorrellHeriberto Rodriguez-Martinez
Mar 29, 2007·Reproduction, Fertility, and Development·Heriberto Rodríguez-Martínez
Aug 30, 2005·Theriogenology·Raquel LavaraJosé Salvador Vicente
May 13, 2006·Reproduction in Domestic Animals = Zuchthygiene·T HallapH Rodriguez-Martinez
Sep 21, 2006·Reproduction in Domestic Animals = Zuchthygiene·H Rodríguez-Martínez
Jan 12, 2007·Reproduction in Domestic Animals = Zuchthygiene·A ChaveiroF M da Silva
Mar 15, 2005·Theriogenology·Triin HallapHeriberto Rodriguez-Martinez
May 10, 2016·Journal of Animal Science and Biotechnology·Alessia GloriaAlberto Contri
Aug 25, 2017·Zygote : the Biology of Gametes and Early Embryos·J M Morrell, I Mayer

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