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RAM – Revista de Administração Mackenzie: its history and challengesRAM – Revista de Administração Mackenzie: su trayectoria y retosRAM – Revista de Administração Mackenzie: sua trajetória e desafios
(Escola Brasileira de Administração Pública e de Empresas da Fundação Getulio Vargas, 2018)
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 ...
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 ...
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 ...
Components of the extender and seminal plasma can alter the response of ram spermatozoa to cryopreservation
(Ediciones Taurus, 2019-12)
The cryopreservation of sheep semen represents a challenge to increase pregnancy rates in cervical artificial insemination programs. Decreased sensitivity at low temperatures could counteract certain detrimental effects ...
Heterologous recombinant protein with decapacitating activity prevents and reverts cryodamage in ram sperm: An emerging biotechnological tool for cryobiology
(Elsevier, 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 ...
Modeling of behavioral responses for successful selection of easy-to-train rams for semen collection with an artificial vagina
(Elsevier Science, 2018-05)
The aim of this study was to analyze the reproductive behavioral responses in Australian Merino rams, to identify those related to a faster training for semen collection with an artificial vagina. Eight Australian Merino ...
Administration of equine Chorionic Gonadotrophin (eCG) to rams to improve the reproductive performance during the non-breeding season
(Elsevier, 2020-06)
In most ram breeds, there are annual changes in testosterone serum concentration and semen quality. This study aimed to determine if eCG administration to rams during the non-breeding season improves the reproductive ...