Buscar
Mostrando ítems 11-20 de 1565
Seminal plasma proteins modify the distribution of sperm subpopulations in cryopreserved semen of rams with lesser fertility
(Elsevier Science, 2017-09-27)
Any physiological mechanism involved in sperm selection and semen improvement has effects on heterogeneous sperm populations. This is mainly due to the fact that sperm populations within a single ejaculate have considerable ...
Ram semen deterioration by short-term exposure to high altitude is prevented by improvement of antioxidant status
(Cambridge University Press, 2018)
Ovine reproduction efficiency in herds at high altitude (ha) is lower than that at low altitude (la). In ewes, ha effects are due to hypoxia and oxidative stress. Our aim was to establish the effect of antioxidant vitamin ...
Improvement of antioxidant status and semen quality by oral supplementation with vitamins c and e in rams
(Universidad del Zulia Facultad de Ciencias Veterinarias, 2016)
In males, most of the conditions leading to decreased fertility are associated with oxidative stress, where supra-physiological levels of reactive oxygen species exert detrimental effects on spermatogenesis and sperm ...
Trehalose addition to a Tris-fructose egg yolk extender on quality of ram sperm preserved at 0 °C
(Brazilian Journal of Animal Science, 2023)
Conserved ram seminal plasma proteins bind to the sperm membrane and repair cryopreservation damage
(Elsevier Science Inc, 2011-02)
Whole seminal plasma (SP) enhances the function and fertility of frozen/thawed ram sperm. The objective of the current study was to investigate whether SP proteins capable of binding to molecules from the sperm plasma ...
Sperm head ellipticity as a heat stress indicator in Australian Merino rams (Ovis aries) in Northern Patagonia, Argentina
(Elsevier Science Inc, 2015-03)
In Northern Patagonia, Argentina, the ovine mating season starts on March 15, which is the time when rams are submitted to summer temperatures. This study assessed the adaptability of 12 Australian Merino rams, six unshorn ...