Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Sperm cryopreservation"”.
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High-throughput sperm cryopreservation of aquatic species
… disciplines for application of high-throughput sperm cryopreservation to aquatic species. The blue catfish Ictalurus furcatus was selected for research due to its role in production of hybrid catfish with eggs from channel catfish Ictalurus punctatus. A high-throughput cryopreservation pathway …
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Sperm cryopreservation and artificial insemination at Groote Schuur Hospital.
The diagnosis and therapy managed by the specialities of infertile couples is traditionally of Gynaecology and Andrology. The latter is a subspeciality, which should combine the knowledge of urologists and gynaecologists in the treatment of sub or infertile men.
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Analysis of Oocyte Quality in the Rhesus Macaque (Macaca mulatta)
… morphology, and establishment of an optimal sperm cryopreservation protocol for use in IVF. Histological examination of the rhesus ovary demonstrated an age-related pattern of follicle depletion similar to that described in the human ovary. Oocyte karyotype analysis revealed a significant …
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Metabolism and cryo-sensitivity of domestic cat (Felis catus) and cheetah (Acinonyx jubatus) spermatozoa
<p> <p>Teratospermia (ejaculation of ≥ 60% structurally abnormal spermatozoa) is prevalent among felids facing extinction risk, including the cheetah. This trait also occurs in certain domestic cat populations, providing a valuable research model. Multiple components of sperm function are disrupted …
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Effect of different equilibration periods pre-cryopreservation on post-thaw sperm motility in Nguni and Boran bulls
… semen is frozen, generally only about 50% of the spermatozoa survive the cryopreservation process. Thus, any factors possibly affecting the survival of spermatozoa through the numerous freezing-thawing steps should be studied, in order to identify the optimal conditions for the survival of …
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The effect of interval between inseminations and semen handling on in-vivo and in-vitro fertility of frozen-thawed boar sperm
… on the potential of frozen-thawed boar sperm (FTS), due to the biological sensitivity of the sperm cells and the lower resulting pregnancy rates and litter sizes. This thesis will outline the current swine reproductive production practices, provide a brief history of boar sperm …
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Impact of chemotherapy on the release and function of extracellular vesicles in the pre-pubertal testis
… in boys is reduced fertility, as it damages the spermatogonial stem cell (SSC) niche within the testis. This niche is essential for future fertility as these SSCs will differentiate into sperm following the onset of puberty. In post-pubertal males, this can be somewhat mitigated by the use of …
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Preservation of sperm harvested from the rat, caprine, equine, and bovine epididymis
… of attention lent to the recovery of functional sperm from the epididymides of deceased males (Foote, 2000). Postmortem specimens have a finite time period before decomposition affects functionality. Determination of this “window of opportunity” to harvest and preserve epididymal sperm would be …