Propylene glycol supplementation response in multiovulated cows for embryo production

 

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Autores: Molina-Coto, Roger Eduardo, Arroyo-Oquendo, Carlos, Carballo-Guerrero, Daniel, Elizondo-Salazar, Jorge Alberto
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2018
Descripción:Multiovulation and embryo transfer is a technique used in genetic breeding programs. The synchronization-multi ovulation protocols of bovine embryo donors, as well as the embryo collection technique, have improved, however, the technique should still be maximized. This study was done with the objective of evaluating the effect of the administration of propylene glycol (PPG) in multiovulated donor cows on the production and quality of embryos. The study was conducted in Pococi, Limon, Costa Rica, from February 2011 to January 2012. Daily and oral administration of 300 mg PPG was given from one week prior to one week after the starting of the synchronization-multiovulation protocol. Embryo flushing was performed every two months and seven cows were used. Ovarian evaluations were performed using transrectal ultrasonography before and during the days of the synchronization-multiovulation treatment. The embryos were collected and classified at the age of seven days. Treatment with PPG did not affect the number and size of ovarian follicles as measured by ultrasonography. Likewise, the number of structures collected and their quality did not improve with supplementation. The results of the experiment suggest that other factors, unrelated to the effect of PPG supplementation, affect the animal response to treatments for multiovulation and embryo collection.
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Español
OAI Identifier:oai:portal.ucr.ac.cr:article/30837
Acceso en línea:https://revistas.ucr.ac.cr/index.php/agromeso/article/view/30837
Access Level:acceso abierto
Palabra clave:embryos
cattle
induced ovulation
ovarian follicles
reproduction.
embriones
ganado bovino
ovulación inducida
folículos ováricos
reproducción.
Interacciones nutrición-reproducción