Results 161 to 170 of about 149,902 (201)
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The thermal denaturation of nucleoprotein in boar sperm
Journal of Molecular Biology, 1965The paper describes a study of the thermal denaturation of DNA in intact boar sperm. A recently designed microspectrophotometer was used to measure the integrated absorption at 260 m μ of sperm after they had been heated in several media. Denaturation was detected with heating media containing 70% glycerol and 30% of a sodium chloride-sodium citrate ...
P J, CHAMBERLAIN, P M, WALKER
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Influence of progesterone on boar sperm capacitation
Journal of Endocrinology, 1995Abstract This research investigates the effect of progesterone (P4) on boar sperm capacitation. Ejaculated spermatozoa were washed and incubated under capacitating conditions with or without P4. At different times of incubation samples of sperm were exposed to solubilized zonae pellucidae (ZP) and the degree of capacitation was ...
BARBONI, Barbara +2 more
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New Aspects of Boar Sperm Encapsulation
Reproduction in Domestic Animals, 2011ContentsThe study takes into account the main steps and techniques for boar semen encapsulation, to optimize the instrumental insemination interventions. The use of cheap, biocompatible polymers as alginate can assure a regular, constant release of spermatozoa in the sow reproductive system, avoiding the double/triple intervention of insemination and ...
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Boar Sperm Encapsulation ReducesIn VitroPolyspermy
Reproduction in Domestic Animals, 2010A boar sperm encapsulation technology in barium alginate has been developed to enhance reproductive performances and spermatozoa preservation time; aim of this work was to evaluate the effect of in vitro sperm encapsulation on polyspermy as a function of storage time at 18 degrees C.
Faustini M. +8 more
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Effects of boar sperm antioxidant supplementation on fertility
Animal Reproduction Science, 2022Use of cooled stored boar semen for artificial insemination accounts for 99% of inseminations in pork production sectors worldwide. The aim of the present study was to examine use of GameteGuard®-CP, a natural plant derived blend of antioxidants, supplemented in one commercially available semen extender on sperm quality, conception rate, farrowing rate,
Myles J, Shepherd +3 more
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Effect of dietary selenium on boar sperm quality
Animal Reproduction Science, 2013The primary objective of this research was to evaluate the effect of long-term dietary selenium supplementation of commercial swine diets on semen production and sperm quality. The dietary treatments were a non-supplemented basal diet or the basal diet supplemented with 0.3ppm selenium in either an organic or inorganic form.
K W, Lovercamp +3 more
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Dynamics of heparin-binding proteins on boar sperm
Animal Reproduction Science, 2009The presence, topology and dynamics of heparin-binding proteins (HBP) on boar sperm were evaluated. HBP distribution was analyzed by subcellular parting, using biotinylated heparin followed by colorimetric detection. HBP were detected as peripherical and integral periacrosomal membrane proteins.
Dora G, Dapino +3 more
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Improvement of the motility of boar sperm after cryopreservation
Animal Reproduction Science, 2020After the sperm cryopreservation process, there frequently is a marked decrease in sperm motility, however, this loss of motility could be avoided or reduced by modifying the thawing extender. The aim of conducting this study was to evaluate treatments resulting in differences in pH of the thawing extender on post-thawing sperm quality, especially ...
Eduardo, de Mercado +2 more
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Efficiency of three boar sperm enrichment techniques
Reproduction in Domestic Animals, 2021AbstractThe objective of the study was to investigate the efficiency of three enrichment methods to separate boar spermatozoa. Twenty‐four ejaculates from 12 boars (2 ejaculates/boar) were extended (30 × 106 spermatozoa/mL) in commercial Beltsville Thawing Solution.
Athina Basioura +3 more
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Reproductive toxicology of 2,4 dinitrophenol in boar sperm
Toxicology in Vitro, 2016Abstract The aim of this study was to evaluate the toxic effects of 2,4 dinitrophenol (DNP) on swine spermatozoa; particularly plasma membrane fluidity and integrity, mitochondrial function and motility, including oxidative stress parameters of lipid peroxidation and production of reactive oxygen species, when cooling to 17 °C during 24 to 96 h.
Estela Fernandes Silva +6 more
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