Dias, C C Progesterone concentrations, exogenous equine chorionic gonadotropin, and timing of prostaglandin F(2alpha) treatment affect fertility in postpuberal Nelore heifers. [electronic resource] - Theriogenology Aug 2009 - 378-85 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 1879-3231 Standard No.: 10.1016/j.theriogenology.2009.03.006 doi Subjects--Topical Terms: AnimalsCattle--bloodDinoprost--pharmacologyEstrus Synchronization--methodsFemaleFertility--drug effectsGonadotropins, Equine--pharmacologyInsemination, Artificial--methodsOsmolar ConcentrationOvarian Follicle--cytologyOvulation Induction--methodsPregnancyPregnancy RatePregnancy, AnimalProgesterone--analysisTime Factors