Effect of ovulatory follicle size and expression of estrus on progesterone secretion in beef cows.

@article{Busch2008EffectOO,
  title={Effect of ovulatory follicle size and expression of estrus on progesterone secretion in beef cows.},
  author={Dr. C.-J. Busch and Jacqueline A. Atkins and J{\"o}rg Bader and D. J. Schafer and David J. Patterson and Tom W Geary and Michael Smith},
  journal={Journal of animal science},
  year={2008},
  volume={86 3},
  pages={553-63}
}
Induced ovulation of small dominant follicles (SF, < 12 mm; CO-Synch protocol) in postpartum beef cows resulted in formation of corpora lutea (CL) that exhibited a delayed rise in progesterone (P4) compared with CL from large dominant follicles (LF, > 12 mm). Experiment 1 characterized P4 concentrations from ovulation to subsequent estrus among GnRH-induced or spontaneously ovulated SF (<or= 11 mm) or LF (>or= 12 mm) to determine if P4 secretion by CL formed from GnRH-induced SF remains lower… CONTINUE READING