@article{Rowell_White_Hauer_1997, title={Progesterone during the breeding season and pregnancy in female muskoxen on different dietary regimens}, volume={17}, url={https://septentrio.uit.no/index.php/rangifer/article/view/1363}, DOI={10.7557/2.17.3.1363}, abstractNote={Previously, we documented lowered calving success in captive muskoxen raised for 6 years on a low nutritional plane. In an effort to identify causes of lowered calf production, we looked at serum progesterone during the breeding season in muskoxen raised on either a high (HP) or low (LP) nutritional plane. Complete cessation of estrous cycli-city in 2 parous cows was the only irregularity identified. Abortion and/or embryonic loss occurred in both HP and LP cows. We also compared progesterone during pregnancy between the 2 nutritional planes and lactating and non-lacta-ting cows. The timing of the rise and fall of the mid-pregnant progesterone peak was consistent with stage of gestation and apparently independent of time of breeding, diet or lactational status.}, number={3}, journal={Rangifer}, author={Rowell, Janice E. and White, Robert G. and Hauer, William E.}, year={1997}, month={Feb.}, pages={125–129} }