The aim of this work was to evaluate pregnancy rates in bovine embryo recipients with compact and cavitary corpus luteum. Two hundred and three crossbred heifers were divided in two groups. In the first group (G-PGF, n=103), the animals received 500 mg de Cloprostenol IM (Sincrocio, Ouro fino, Brasil) after CL identification by ultrasonography. After that, heifers were detected for heat the next 72 hours. The a...