Results 61 to 70 of about 11,914 (206)
Wildlife Biology, EarlyView.After decades of dramatic reductions in their populations, Italian wolves have begun recolonizing parts of their historic range. This growth in populations can lead to potential conflicts with human activities, which remain the main cause of wolf mortality.
Ilaria Troisio +8 more
wiley +1 more source
Reproductive tract modifications of the boar sperm surface [PDF]
Molecular Reproduction and Development, 2017 The sperm cell has a unique, polarized, and segregated surface that is modified extensively by the changing environments in both the male and the female reproductive tracts. The sperm cannot refresh its surface, as protein translation and membrane recycling by intracellular vesicular transport have ceased upon its maturation.
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A novel experimental design for boar sperm cryopreservation
Journal of Animal Science, 2022 AbstractCryopreservation of sperm is a routine technology in many livestock species, but not in swine. Frozen sperm must result in acceptable conception rates and produce 11 to 12 piglets/litter to be competitive with traditional cooled semen. The development of an extender that results in high post-thaw sperm quality and acceptable litter size ...
Myles J, Shepherd, Lisa A, Herickhoff
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Aquaglyceroporins but not orthodox aquaporins are involved in the cryotolerance of pig spermatozoa
Journal of Animal Science and Biotechnology, 2019 Background Aquaporins (AQPs) are a family of transmembrane water channels that includes orthodox AQPs, aquaglyceroporins (GLPs) and superAQPs. AQP3, AQP7, AQP9 and AQP11 have been identified in boar sperm, and they are crucial for sperm maturation and ...
Ariadna Delgado-Bermúdez +8 more
doaj +1 more source
Andrology, EarlyView.ABSTRACT Background Asthenozoospermia is a significant contributing factor to male infertility. Accumulating evidence indicates that impaired sperm motility is closely linked to dysregulated microRNA expression during spermatogenesis. Seminal plasma exosomes are enriched with diverse microRNAs, which play pivotal roles in modulating sperm motility, the
Zhi‐Jian Zhu +8 more
wiley +1 more source
BMC Genomics, 2018 Background Capacitation, a prerequisite for oocyte fertilization, is a complex process involving series of structural and functional changes in sperms such as membrane modifications, modulation of enzyme activities, and protein phosphorylation.
Yuan Li +10 more
doaj +1 more source
Palm Kernel Meal Protein Hydrolysates Enhance Post-Thawed Boar Sperm Quality
Animals, 2023 Boar sperm is sensitive to particular conditions during cryopreservation, resulting in an extreme reduction in fertilizing ability due to damage to the sperm membranes. PKMPH contains bioactive peptides that have antioxidant and antimicrobial activities.
Vassakorn Khophloiklang +3 more
doaj +1 more source
Impact of Sorting and Catch Media on Porcine Sperm Motility, Capacitation, and Viability
Andrology, EarlyView.ABSTRACT Background Fluorescence‐activated cell sorting (FACS) has emerged as a powerful tool for selecting spermatozoa of a desired population of fluorescent biomarkers, offering potential applications in reproductive biology and agriculture. However, concerns remain regarding sorting‐induced physiological alterations that could compromise spermatozoa
Tyler Weide, Juan Steibel, Karl Kerns
wiley +1 more source
Factors Affecting the Efficient Production of Boar Sperm [PDF]
Reproduction in Domestic Animals, 2015 ContentsEfficient sperm production in boars has developmental and functional components. Factors affecting the developmental phase influence Sertoli cell mitosis, appear to be mostly stimulatory and have permanent effects on production of sperm. Birthweight appears to hold promise as a prospective screening tool as it appears to have a strong positive ...
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GSTM3, but not IZUMO1, is a cryotolerance marker of boar sperm [PDF]
Journal of Animal Science and Biotechnology, 2019 Cryopreservation is currently the most efficient method for long-term preservation of mammalian gametes and is extensively used in swine artificial insemination (AI) centres. However, it is well-known that cryopreservation procedures induce changes in the water phase in both intra and extracellular compartments, which alter the content and localisation
Marc Llavanera +7 more
openaire +4 more sources