Results 41 to 50 of about 149,902 (201)
Boar and season effects on some parameters of semen fertilizing potential [PDF]
Veterinarski Glasnik, 2016 In order to determine the more accurate fertile potential of sperm, it seems that the conventional parameters of boar semen quality (the ejaculate volume, sperm concentration, progressive motility, percentage of live sperm and of those with ...
Apić Jelena +3 more
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Assessment of quality in specific fractions of Large White Yorkshire boar semen [PDF]
Journal of Veterinary and Animal Sciences, 2021 Boar semen is voluminous and ejaculated as jets or fractions of pre-sperm, sperm rich (SRF) and post-sperm rich fractions. Recent studies have reported more resilient characteristics of sperm in initial portions of SRF towards cold shock and ...
K. G. Ambily +5 more
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Protein-carbohydrate interactions during fertilization [PDF]
, 1998 Interaction between gametes during fertilization is at least in part regulated by carbohydrate moieties of the zona pellucida (ZP) and carbohydrate binding proteins of the sperm surface. This review focuses on the protein-carbohydrate interactions during
Plendl, J., Sinowatz, Fred, Kolle, S.
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Effect of temperature on the fluidity of boar sperm membranes [PDF]
Reproduction, 1989 Summary. Fluidity was used to assess changes in molecular organization of boar spermatozoa plasma membranes from (1) the head and (2) the rest of the sperm body and acrosome as a consequence of temperature. The initial fluidity of the head membranes at 25°C was less than that of the sperm body membranes (P < 0·05).
A T, Canvin, M M, Buhr
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Ameliorative Effect of Chitosan Complex on Miniature Pig Sperm Cryopreservation
Journal of Animal Reproduction and Biotechnology, 2018 Cryopreservation is mainly used for preservation of boar sperm. However, this method stresses the sperm by reactive oxygen species (ROS), and the conception rate and the litter size are not more efficient than the liquid preservation of spermatozoa ...
Hye-Min Hong +4 more
doaj +1 more source
Selection of Boar Sperm by Reproductive Biofluids as Chemoattractants [PDF]
Animals, 2020 Chemotaxis is a spermatozoa guidance mechanism demonstrated in vitro in several mammalian species including porcine. This work focused on follicular fluid (FF), periovulatory oviductal fluid (pOF), the medium surrounding oocytes during in vitro maturation (conditioned medium; CM), progesterone (P4), and the combination of those biofluids (Σ) as ...
Luis Alberto Vieira +3 more
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Animals, 2023 During cold storage, boar spermatozoa undergo oxidative stress, which can impair sperm function and fertilizing capacity. The objective of the present study was to assess the effects of Schisandrin B (Sch B) in semen extenders on the quality of boar ...
Yunfa Xie +9 more
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Psychological and physiological adaptations to sperm competition in humans [PDF]
, 2005 Postcopulatory competition between males, in the form of sperm competition, is a widespread phenomenon in many animal species. The extent to which sperm competition has been an important selective pressure during human evolution remains controversial ...
Pound, N, Goetz, AT, Shackelford, TK
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Reduced glutathione and cysteine hydrochloride on crossbred bull semen [PDF]
, 2012 Over the last few years, good quality freezable semen was not utilized effectively due to less knowledge about the freezability of semen. One reason is the lack of sufficient antioxidants in the seminal plasma and semen extender.
P Perumal
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Protein kinase C activity in boar sperm [PDF]
Andrology, 2017 SummaryMale germ cells undergo different processes within the female reproductive tract to successfully fertilize the oocyte. These processes are triggered by different extracellular stimuli leading to activation of protein phosphorylation. Protein kinase C (PKC) is a key regulatory enzyme in signal transduction mechanisms involved in many cellular ...
Teijeiro, Juan Manuel +3 more
openaire +3 more sources