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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 ...
Sperm Motility and Viability in West African Dwarf Rams Treated with Euphorbia hirta
(Sociedad Chilena de Anatomía, 2009)
Seasonal variations in the composition of ram seminal plasma and its effect on frozen-thawed ram sperm
(Elsevier Science Inc, 2008-03)
It has been proposed that seminal plasma (SP) in the extender or in post-thaw media can prevent and revert cold-shock damage in cryopreserved ram sperm; however, this was dependent on season. We evaluated sperm parameters ...
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 ...
Cholesterol and desmosterol incorporation into ram sperm membrane before cryopreservation: Effects on membrane biophysical properties and sperm quality
(Elsevier Science, 2020-09-01)
Ram sperm are particularly sensitive to freeze-thawing mainly due to their lipid composition, limiting their use in artificial insemination programs. We evaluated the extent of cholesterol and desmosterol incorporation ...
Effect of seminal plasma on post-thaw quality and functionality of corriedale ram sperm obtained by electroejaculation and artificial vagina
(Wiley Blackwell Publishing, Inc, 2015-01)
We have already shown that seminal collection method affects seminal plasma composition and sperm quality in Corriedale rams. In this study, we evaluated the effect of seminal plasma collected by electroejaculation or ...
Trehalose addition to a Tris-fructose egg yolk extender on quality of ram sperm preserved at 0 °C
(Brazilian Journal of Animal Science, 2023)
Motility and viability of ram sperm cryopreserved in a Tris-egg yolk extender supplemented with anti-oxidants
(Elsevier B.V., 2009-08-01)
The objective of this study was to evaluate the effects of the addition of the anti-oxidants Trolox and catalase to a ram semen cryopreservation extender, on the basis of post-thaw sperm motility, plasma membrane integrity, ...
Heterologous recombinant protein with decapacitating activity prevents and reverts cryodamage in ram sperm: An emerging biotechnological tool for cryobiology
(Elsevier Science, 2016-01)
During the last decades fundamental and applied aspects of mammalian ram sperm cryopreservation have been increasingly explored by scientists and biotechnologists. Many works report modifications in the composition of the ...