Reducing the interval from presynchronization to initiation of timed artificial insemination improves fertility in dairy cows.

@article{Galvo2007ReducingTI,
  title={Reducing the interval from presynchronization to initiation of timed artificial insemination improves fertility in dairy cows.},
  author={Klibs N Galv{\~a}o and Manoel Francisco de S{\'a} Filho and Jos{\'e} Eduardo P. Santos},
  journal={Journal of dairy science},
  year={2007},
  volume={90 9},
  pages={4212-8}
}
The objective was to determine if reducing the interval from presynchronization to the first GnRH injection (G1) of a timed artificial insemination (AI) protocol improves pregnancy per AI. One thousand two hundred fourteen Holstein cows, at 37 +/- 3 d in milk (DIM), were stratified by parity, DIM, and milk yield in the first month postpartum and randomly assigned to control (n = 412), 2 injections of PGF2alpha at 37 +/- 3 and 51 +/- 3 DIM, then enrolled in a timed AI protocol 14 d later; PShort… CONTINUE READING

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