More male calves born after Presynch-Ovsynch protocol with 24-hour timed AI in dairy cows.

@article{Youssefi2013MoreMC,
  title={More male calves born after Presynch-Ovsynch protocol with 24-hour timed AI in dairy cows.},
  author={Reza Youssefi and Mohammed Vojgani and Faramarz Gharagozlou and Vahid Akbarinejad},
  journal={Theriogenology},
  year={2013},
  volume={79 5},
  pages={
          890-4
        }
}
Various factors including synchronization treatments have been reported to influence sex ratio of offspring in cattle. The present study was conducted to investigate the effect of treatment with Presynch-Ovsynch protocol on sex ratio of offspring in Holstein dairy cows. Healthy Holstein cows (N = 1102) were randomly assigned to Presynch-Ovsynch (N = 564) or control (N = 538) group by parity. Cows in Presynch-Ovsynch group received two administrations of PGF(2)α 14 days apart started at Days 23… CONTINUE READING
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