Estrous CycleEstrusProgesteroneCell CycleCorpus LuteumDiestrusOvaryProestrusEstradiolUterusOvulationPregnancy, AnimalLuteinizing HormoneOvariectomyDinoprostPregnancyOvarian FollicleEndometriumCattleGenitalia, FemaleLuteolysisFollicle Stimulating HormoneLuteal PhaseMenstrual CycleSheepReproductionFollicular PhaseEstrus SynchronizationAnestrusGonadotropin-Releasing HormoneOxytocinFertilityRNA, MessengerTime FactorsLuteal CellsFallopian TubesSwineVaginaSexual MaturationSexual Behavior, AnimalInhibinsEstrogensSex CharacteristicsRadioimmunoassayEstrus DetectionCell Cycle ProteinsPseudopregnancyMyometriumPostpartum PeriodEmbryo ImplantationGonadal Steroid HormonesFollicular AtresiaImmunohistochemistryProstaglandins FPregnancy ProteinsSuperovulationRats, Sprague-DawleyPituitary Gland, AnteriorPituitary GlandFollicular FluidOrgan SizeGonadotropinsInsemination, ArtificialPregnenedionesCopulationProlactinGranulosa CellsDrug ImplantsRandom Allocation5-alpha-DihydroprogesteroneSex FactorsProgesterone CongenersHormonesCorpus Luteum MaintenanceChorionic GonadotropinGene ExpressionCitric Acid CycleGene Expression RegulationMelengestrol AcetateBody WeightReverse Transcriptase Polymerase Chain ReactionTheca CellsIn Situ HybridizationMesocricetusLactationTestosteroneBreedingCastration20-alpha-Hydroxysteroid DehydrogenaseHypothalamusCloprostenolRats, WistarInfertility, FemaleSus scrofaAndrostenedioneFollicle Stimulating Hormone, beta SubunitPregnadienesMonocrotophosCarbofuranAbortifacient Agents