La transferencia de embriones para el mejoramiento genético en Ganado Bovino

Practically the support of animal production is reproduction, which is why several assisted reproduction techniques have been perfected and developed, such as embryo transfer. Through this biotechnology it is possible to increase the economic performance of farms, since it allows obtaining a large number of calves from genetically superior animals. The purpose of embryo transfer programs is to obtain the greatest number of embryos in a single estrous cycle, for which ovarian stimulation of the donor cow is carried out with the objective of producing several oocytes, compared to the first ovulation characteristic of the species. For ET to be successful, it is important to select and manage the animals that will fulfill their function as donors, recipients and studs, which is why the manager must be trained in the correct selection. To carry out the ET process, there are several protocols that are used for the superovulation of donors, with which the aim is to obtain the greatest number of viable oocytes to be fertilized, then collect transferable embryos with a high chance of producing pregnancy. Embryo transfer through the surgical method has stopped being carried out, since the non-surgical method is the one chosen, this being where the embryo is deposited in the upper portion of the uterine horn and ipsilateral to the ovary in which it is located. The corpus luteum. The percentage of pregnancy rate in recipient cows with frozen embryos was deduced that 33.33% remained pregnant, while 66.66% did not respond to the embryo transfer.

• Autor principal: Rizzo Jordán, Katherine Jetzabel (author)
• Formato: bachelorThesis
• Publicado: 2023
• Materias: Transferencia de embriones; Mejoramiento genético; Ganado bovino; Donantes
• Acceso en línea: http://dspace.utb.edu.ec/handle/49000/14962