Gradela, A. Esper, C.R. Matos, S.P.M. Lanza, J.A. Deragon, L.A.G. Malheiros, R.M. Dominant follicle removal by ultrasound guided transvaginal aspiration and superovulatory in Nellore cows Subjects--Topical Terms: Gado NeloreOvarioSuperovulacaoReproducao Animal