Pregnancy rates in a 10 days breeding season in postpartum Nellore cows treated with melengestrol acetate associated or not with estradiol cypionate - Valarelli, R. L.; Sa Filho, O. G. [UNESP]; Meneghetti, M. [UNESP]; Vasconcelos, José Luiz Moraes [UNESP] (Poultry Science Assoc Inc, 2007)
Keywords: MGA; ECP; natural service