Evolution of fixed-time AI in dairy cattle in Brazil

Various programs have been used to synchronize ovulation of a fertile oocyte, accompanied by fixed-time artificial insemination (FTAI). These programs involve a series of hormonal treatments to achieve four physiologic outcomes: 1) synchronize an ovarian follicular wave; 2) optimize conditions for o...

Descripción completa

Detalles Bibliográficos
Autores principales: Vasconcelos, Jose Luiz Moraes, Pereira, Marcos Henrique Colombo, Wiltbank, Milo Charles, Guida, Thiago Guzela, Lopes, Francisco Rebolo, Sanches, Carlos Patricio, Barbosa, Lucas Furtado dos Santos Pereira, Costa, Wedson Maria, Munhoz, Anderson Kloster
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Colégio Brasileiro de Reprodução Animal 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9536079/
https://www.ncbi.nlm.nih.gov/pubmed/36249843
http://dx.doi.org/10.21451/1984-3143-AR2018-0020
Descripción
Sumario:Various programs have been used to synchronize ovulation of a fertile oocyte, accompanied by fixed-time artificial insemination (FTAI). These programs involve a series of hormonal treatments to achieve four physiologic outcomes: 1) synchronize an ovarian follicular wave; 2) optimize conditions for ovulatory follicle development; 3) synchronize corpus luteum (CL) regression; and 4) synchronize ovulation. This manuscript summarizes studies conducted in Brazil with lactating dairy cows that aimed to increase pregnancy rates to E2/P4-based programs.

Ejemplares similares