Results 11 to 20 of about 133,635 (289)

The effect of solar radiation on spermatozoa abnormality and motility in bulls [PDF]

open access: yesJournal of Animal Science and Technology
The aim of this study was to investigate the effects of solar radiation on spermatozoa motility and abnormalities. The material of the study consisted of 28 bulls of the Holstein Friesian, Brown Swiss and Simmental breeds reared in a private AI center ...
Onur Şahin
doaj   +2 more sources

A review of sperm cryopreservation in the domestic dog and cat—part II, freezing epididymal spermatozoa, why is it different from ejaculated spermatozoa? [PDF]

open access: yesActa Veterinaria Scandinavica
If a male dies suddenly or requires castration, it may still be possible to produce offspring through artificial insemination (AI) by cryopreserving spermatozoa retrieved from the epididymis.
Eva Axnér
doaj   +2 more sources

Use of Pentoxifylline to Improve Seminal Parameters in Dogs. [PDF]

open access: yesVet Med Sci
A single oral dose of pentoxifylline (10 mg/kg) administered 40 min before ejaculation significantly improved sperm concentration and progressive motility in dogs. The effect was most pronounced in oligospermic subjects, supporting pentoxifylline as a rapid, well‐tolerated adjunct therapy for canine subfertility .
Cicirelli V   +6 more
europepmc   +2 more sources

Increased frequency of aneuploidy in long-lived spermatozoa. [PDF]

open access: yesPLoS ONE, 2014
Aneuploidy commonly causes spontaneous abortions, stillbirths, and aneuploid births in humans. Notably, the majority of sex chromosome aneuploidies in live births have a paternal origin.
Young-Ah You   +6 more
doaj   +1 more source

Effects of the slow cooling during cryopreservation on the survival and morphology of Taiwan shoveljaw carp (Varicorhinus barbatulus) spermatozoa [PDF]

open access: yes, 2009
Over the past decades, pollution, overfishing, and habitat degradation have driven the population size of Taiwan shoveljaw carp down markedly in Taiwan.
Andrabi   +38 more
core   +3 more sources

Epigenetic Alterations in Cryopreserved Human Spermatozoa: Suspected Potential Functional Defects

open access: yesCells, 2022
Background: Gene set enrichment analysis (GSEA) was conducted on raw data, and alternative splicing (AS) events were found after mRNA sequencing of human spermatozoa.
Wanxue Wang   +7 more
doaj   +1 more source

Exceptional sperm cooperation in the wood mouse [PDF]

open access: yes, 2002
Spermatozoa from a single male will compete for fertilization of ova with spermatozoa from another male when present in the female reproductive tract at the same time.
AH Harcourt   +32 more
core   +1 more source

A new insight into male fertility preservation for patients with completely immotile spermatozoa

open access: yesReproductive Biology and Endocrinology, 2017
Background Sperm cryopreservation is the most effective method to preserve male fertility but this is normally used for motile spermatozoa. Thus, only motile spermatozoa are used for cryopreservation in most reproductive medicine centers worldwide.
Huanhua Chen   +9 more
doaj   +1 more source

Structural Abnormalities of Spermatozoa in Triploid Gynogenetic Crucian Carp (Carassius auratus)

open access: yesFrontiers in Genetics, 2021
The spermatozoa of triploid gynogenetic crucian carp (Carassius auratus) (3nDTCC) possess a spermatogenesis process with a normal genetic background. However, the genetic materials of these spermatozoa do not completely inherit gynogenetic progeny in ...
Wangchao He   +10 more
doaj   +1 more source

Chemotaxis of Arbacia punctulata spermatozoa to resact, a peptide from the egg jelly layer [PDF]

open access: yes, 1985
Resact, a peptide of known sequence isolated from the jelly layer of Arbacia punctulata eggs, is a potent chemoattractant for A. punctulata spermatozoa. The chemotactic response is concentration dependent, is abolished by pretreatment of the spermatozoa ...
Brokaw, Charles J.   +3 more
core   +3 more sources

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