Browsing by Subject "Assisted reproduction"

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    Differences in weight, hierarchy, and incidence of lameness between two groups of adult pigs derived from assisted reproductive technologies
    (MDPI, 2022-12-17) Ramírez, Lisette L.; Ortin Bustillo, Alba; Ramis, Guillermo; Romar, Raquel; Coy, Pilar; Romero Aguirregomezcorta, Jon; Ramírez, Lisette L.; Ortín Bustillo, Alba; Ramis Vidal, Manuel Guillermo; Romar Andrés, Raquel; Coy Fuster, Pilar; Anatomía y Anatomía Patológica Comparadas ; Facultad de Veterinaria
    The in vitro production (IVP) and subsequent transfer of embryos (ET) to recipient mothers is not yet an established reproductive technology in the pig industry, as it is in cattle. However, that the trade of IVP-cryopreserved pig embryos is expected to start in the next decades. Society and governments are increasingly aware of the repercussions that IVP could have for animal health, welfare, behavior, or food safety, but proven scientific information for this type of animal does not exist, since no colonies of pigs have been created to this end. We created a small one and studied the differences between 16 IVP-derived pigs and 14 pigs derived from artificial insemination (AI), at 3.5 years of age, conceived from the same boar, and housed and fed under the same conditions since they were born. Incidence of lameness, position in the herd hierarchy, weight, adenosine deaminase activity, and hematological and biochemical analytes were compared between the two groups of animals. The results showed that the IVP animals weighed more, occupied higher positions in the herd hierarchy, and had a lower incidence of lameness. Although genetic differences from the maternal line could explain some of these results, it is also possible that the IVP animals developed better adaptative abilities, but more studies with a higher number of animals are necessary to reach consistent conclusions.
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    Las técnicas de reproducción asistida en México: una realidad ignorada en su legislación.
    (Universidad de Murcia, Servicio de Publicaciones., 2024) Sandoval Ochoa, Francisco Javier
    El presente trabajo muestra la situación legal que existe en México, tanto a nivel federal como estatal, respecto a las técnicas de reproducción asistida. En primer lugar, se plantea la situación que existe a nivel federal respecto la legislación y jurisprudencia que rige este tema, así como la autoridad competente para regular los establecimientos dónde se realizan estos procedimientos. Posterior a esto, se pasa a analizar la legislación de los estados que autorizan la reproducción asistida y se muestran la información provista por la autoridad sanitaria de los 32 estados respecto a tipo y número de procedimientos de reproducción asistida realizados en la entidad, número de clínicas públicas y privadas que operan en el estado, así como el número de nacimientos registrados como resultado del empleo de técnicas de reproducción asistida.
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    Total urokinase-type plasminogen activator (uPA) levels in seminal plasma are associated with positive assisted reproductive technology outcomes
    (2018-03-23) Martínez Soto, Juan Carlos; Landeras, José; Mollá, Marta; Mondéjar, Irene; Nicolás, María; Fernández-Olmedilla, Laura; Trabalón Martina; Coy Fuster, Pilar; Gadea Mateos, Joaquín; Gadea Mateos, Joaquín; Fisiología; Facultades de la UMU