title: The effect of nutritional stress on the plasma progestagen levels and embryonic mortality in twin pregnancies of mares.
abstract: Two thoroughbred mares bearing twins as diagnosed by rectal palpation, were subjected to nutritional stress by drastically reducing the daily ration. This resulted in a marked reduction in plasma progestagen levels and the death of either one or both of the twin embryos.
mesh_terms: D000818:Animals; D005260:Female; D005313:Fetal Death / Q000209:etiology / Q000662:veterinary*; D006023:Glycoproteins; D006736:Horses / Q000378:metabolism*; D009751:Nutritional Requirements; D011247:Pregnancy; D011257:Pregnancy Proteins / Q000097:blood*; D011272:Pregnancy, Multiple; D014427:Twins
chemical_list: D006023:Glycoproteins; D011257:Pregnancy Proteins