Luteinizing HormoneOvulationGonadotropin-Releasing HormoneProgesteroneEstradiolEstrusProestrusFollicular PhaseFollicle Stimulating HormoneReceptors, LHOvariectomyOvarian FollicleMethallibureOvaryEstrous CycleOvulation DetectionLuteal PhaseSecretory RateLuteinizationPreoptic AreaSheepPituitary GlandKisspeptinsChorionic GonadotropinGonadotropins, EquineGonadotropins, PituitaryHormone AntagonistsSexual MaturationOvulation InductionPituitary Hormone-Releasing HormonesAnestrusDrug ImplantsHypothalamusGranulosa CellsDiestrusProlactinInhibinsFollicular FluidPregnancySuperovulationCastrationRadioimmunoassayCorpus LuteumFeedbackCattleMenstrual CycleCopulationCircadian RhythmMedian EminenceFertility AgentsEstrus SynchronizationTime FactorsLuteolytic AgentsFeedback, PhysiologicalHypothalamus, MiddleTriptorelin PamoateTheca CellsInsemination, ArtificialCloprostenolGonadotropinsTestosteroneFertility Agents, FemalePituitary Gland, AnteriorAndrostenedioneDinoprostGonadal HormonesReceptors, LHRHGonadal Steroid HormonesEstrogensContraceptives, Postcoital, SyntheticMifepristoneSexual Behavior, AnimalPostpartum PeriodReproductionProgesterone CongenersFertilityProto-Oncogene Proteins c-fosOvipositionRNA, MessengerGonadotrophsHypothalamo-Hypophyseal SystemSwineSeasonsFertilization in VitroOrchiectomyFollicular AtresiaOvarian CystsOxytocinDeerPeriodicityClomipheneRats, Inbred StrainsMesocricetusNeuronsOocytesHormonesLactationInfertility, FemaleNorpregnadienesNaloxone