Evolution of fixed-time AI in dairy cattle in Brazil
Vasconcelos, Jose Luiz Moraes; Pereira, Marcos Henrique Colombo; Wiltbank, Milo Charles; Guida, Thiago Guzela; Lopes Jr, Francisco Rebolo; Sanches Jr, Carlos Patricio; Barbosa, Lucas Furtado dos Santos Pereira; Costa Jr, Wedson Maria; Munhoz, Anderson Kloster.
Anim. Reprod.;
15(supl. 1): 940-951, set. 2018. tab, graf
Artigo
em Inglês
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| ID: vti-19458
Resumo
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.(AU)
Biblioteca responsável:
BR68.1
Localização: BR68.1
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