the ability of estradiol-17 beta cyclopentylpropionate ( ecp , 20 mg ) and prostaglandin f2 alpha ( pgf2 alpha ; 5 , 10 , 20 , and 40 mg ) to induce abortion during early gestation ( days 40 to 90 , as estimated by palpation per rectum ) in pregnant feedlot heifers was compared .
C0059610
estradiol-17 beta cyclopentylpropionate
C0032961
gestation