Main ProgramRelationship of semen quality to sperm transport, fertilization, and embryo quality in ruminants*
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Cited by (92)
Comprehensive functional analysis reveals that acrosome integrity and viability are key variables distinguishing artificial insemination bulls of varying fertility
2021, Journal of Dairy ScienceCitation Excerpt :In an attempt to mitigate against this, AI centers often inflate the number of spermatozoa within insemination doses. However, this has been shown to be effective only against compensable sperm defects whereby fertility is typically improved with increasing sperm number until a threshold level is reached (Saacke et al., 1994). This strategy limits the supply of straws that can be processed from an individual ejaculate and disseminated into the field, and is especially problematic for young, genomically selected dairy bulls, which are in high demand but produce low quantities of semen.
Sperm quality assays: How good are they? The horse perspective
2018, Animal Reproduction ScienceEmbryo transfer and other assisted reproductive technologies
2018, Veterinary Reproduction & ObstetricsIn vitro and in vivo fertilization potential of cryopreserved spermatozoa from bull epididymides stored for up to 30 hours at ambient temperature (18 °C–20 °C)
2016, TheriogenologyCitation Excerpt :Another option for separation of epididymal sperm (as demonstrated in the cat) is singe-layer centrifugation at 300 × g for 20 minutes with a colloidal gradient, and this seems to provide better results when compared to the swim-up method [2]. The morphology of spermatozoa is also important for prediction of the potential for fertilization because most of the defects result in complete or partial exclusion during passage through the female genital tract and prevent penetration of the zona pellucida [34]. The large number of distal cytoplasmic droplets seems to have no influence on embryo production.
Fertility management of bulls to improve beef cattle productivity
2016, Theriogenology
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Acknowledgements. Our research on the quantity and quality of accessory sperm was supported by Select Sires Inc., Plain City OH and the Nat'l. Assoc. Anim. Breeders, Columbia MO