Estrous CycleEstrusProgesteroneCell CycleCorpus LuteumDiestrusProestrusOvaryEstradiolUterusPregnancy, AnimalOvulationLuteinizing HormoneDinoprostCattleOvarian FolliclePregnancyEndometriumOvariectomyLuteolysisFollicle Stimulating HormoneLuteal PhaseSheepMenstrual CycleFollicular PhaseEstrus SynchronizationCaribbean RegionAnestrusOxytocinSwineLuteal CellsGonadotropin-Releasing HormoneReproductionRNA, MessengerFallopian TubesTime FactorsInhibinsVaginaGenitalia, FemaleCell Cycle ProteinsEstrus DetectionRadioimmunoassayPseudopregnancyFertilityMyometriumSexual MaturationFollicular AtresiaPostpartum PeriodEstrogensEmbryo ImplantationProstaglandins FRandom AllocationAnimal FeedImmunohistochemistryPregnancy ProteinsGonadal Steroid HormonesFollicular FluidPituitary Gland, AnteriorSuperovulationDigestionGonadotropinsPregnenedionesInsemination, ArtificialAnimal Nutritional Physiological PhenomenaGranulosa CellsPituitary GlandDrug Implants5-alpha-DihydroprogesteroneRats, Sprague-DawleyCitric Acid CycleCorpus Luteum MaintenanceProgesterone CongenersProlactinMelengestrol AcetateHorsesTheca CellsChorionic GonadotropinRumenHormonesOrgan SizeGene Expression20-alpha-Hydroxysteroid DehydrogenaseIn Situ HybridizationCloprostenolGene Expression RegulationReverse Transcriptase Polymerase Chain ReactionLactationPregnadienesMonocrotophosNeurophysinsCarbofuranAbortifacient AgentsSus scrofaMesocricetusFollicle Stimulating Hormone, beta SubunitEtherAndrostenedioneReceptors, LHFollistatinElephants