Invited review: Treatment of cows with an extended postpartum anestrous interval.

@article{Rhodes2003InvitedRT,
  title={Invited review: Treatment of cows with an extended postpartum anestrous interval.},
  author={F. Matthew Rhodes and Scott McDougall and Chris R Burke and Gwyneth A. Verkerk and Keith L. Macmillan},
  journal={Journal of dairy science},
  year={2003},
  volume={86 6},
  pages={1876-94}
}
Cows with an extended interval from calving to first ovulation (PPI) have increased intervals from calving to conception and are more likely to be culled compared with cows with a short PPI. In year-round calving dairy herds, between 11 and 38% of cows are reported as anestrus by 50 or 60 d after calving. In seasonally calving dairy herds, between 13 and 48% of cows are diagnosed as anovulatory anestrus at the start of the breeding period. Ovulation and estrus after calving are delayed when the… CONTINUE READING