Luteinizing HormoneReceptors, LHGonadotropin-Releasing HormoneOvulationProestrusProgesteroneFollicle Stimulating HormoneEstrusEstradiolFollicular PhaseOvariectomyOvarian FolliclePituitary GlandOvaryGonadotropins, PituitaryProlactinSheepPreoptic AreaSecretory RateSexual MaturationChorionic GonadotropinEstrous CyclePituitary Hormone-Releasing HormonesCastrationDiestrusLuteal PhaseKisspeptinsHypothalamusCircadian RhythmInhibinsHormone AntagonistsTestosteroneGonadotropins, EquineOvulation DetectionRadioimmunoassayFollicular FluidMedian EminencePregnancyAnestrusPituitary Gland, AnteriorOvulation InductionDrug ImplantsGranulosa CellsFeedbackLuteinizationCopulationMethallibureMenstrual CycleGonadotropinsCattleReceptors, LHRHSuperovulationTime FactorsPseudopregnancyHypothalamus, MiddleBromocriptineTheca CellsEstrus SynchronizationAndrostenedioneFeedback, PhysiologicalDinoprostGonadal Steroid HormonesAnterior Thalamic NucleiSexual Behavior, AnimalEstrogensMifepristoneAnovulationRats, Inbred StrainsOvipositionFollicle Stimulating Hormone, beta SubunitFertility AgentsOrchiectomyHypothalamo-Hypophyseal SystemDimethyldithiocarbamateOxytocinLuteolytic AgentsHormonesCloprostenolSeasonsNeurosecretory SystemsPituitary Gland, IntermediateLuteinizing Hormone, beta SubunitSwineMesocricetusFertility Agents, FemalePostpartum PeriodAnterior Hypothalamic NucleusMetestrusPeriodicityInsemination, ArtificialRNA, MessengerOrnipressinFollicular AtresiaTestisRats, Sprague-DawleyFertilityCyclonic StormsTriptorelin PamoateNaloxoneGonadotrophs