期刊
ANIMAL REPRODUCTION
卷 15, 期 -, 页码 940-951出版社
BRAZILIAN COLL ANIMAL REPRODUCTION
DOI: 10.21451/1984-3143-AR2018-0020
关键词
FTAI; pregnancy rates
资金
- FAPESP
- CAPES
- CNPq
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.
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