Control of reproduction with anti-progestin and oestrogens in captive bears.

@article{Goeritz2001ControlOR,
  title={Control of reproduction with anti-progestin and oestrogens in captive bears.},
  author={Frank Goeritz and Martin Quest and Tom Hildebrandt and Heinrich H. D. Meyer and Lydia Kolter and Walter Elger and Katarina Jewgenow},
  journal={Journal of reproduction and fertility. Supplement},
  year={2001},
  volume={57},
  pages={249-54}
}
The aim of this study was to establish new methods for controlling reproduction in bears. Anti-progestins were used to interrupt pregnancies. In two consecutive years, the anti-progestin J956 was administered to 11 female bears (nine Ursus arctos, one Ursus tibethanus, one Tremarctos ornatus) living in zoos. The anti-progestin J956 was given orally (n = 4) or parenterally (n = 12). The anti-progestin was administered alone or in combination with ethinyloestradiol, and before or after embryo… CONTINUE READING