title: A review of twinning in horses and the possible therapeutic value of supplemental progesterone to prevent abortion of equine twin fetuses the latter half of the gestation period.
abstract: Equine twinning, related abortion and progestogen plasma concentrations during the gestation period were reviewed. The supplemental administration of exogenous progesterone apparently prevented impending twin abortions in three mares after midgestation. A single viable twin and a mummified fetus were delivered at term by the mares.
mesh_terms: D000034:Abortion, Veterinary / Q000517:prevention & control*; D000818:Animals; D005260:Female; D005313:Fetal Death / Q000517:prevention & control / Q000662:veterinary; D006734:Horse Diseases / Q000517:prevention & control*; D006736:Horses / Q000502:physiology*; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000187:drug effects*; D011374:Progesterone / Q000494:pharmacology / Q000627:therapeutic use*; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control; D014427:Twins
chemical_list: D011374:Progesterone