Ovulation InductionClomipheneAnovulationFertility Agents, FemaleInfertility, FemaleMenotropinsPolycystic Ovary SyndromeGonadotropinsOvarian Hyperstimulation SyndromeFollicle Stimulating Hormone, HumanPregnancy RateFollicle Stimulating HormonePregnancyOvaryInsemination, ArtificialChorionic GonadotropinFertilization in VitroLive BirthOvarian FollicleInsemination, Artificial, HomologousReproductive TechniquesElectrocoagulationPregnancy, MultipleNafarelinSuperovulationReproductive Techniques, AssistedInfertilityLuteinizing HormoneMetforminProgesteroneUrofollitropinGonadotropin-Releasing HormonePregnancy OutcomeEstradiolOvulationDiathermyBuserelinGonadotropins, EquineEnzyme InductionEmbryo TransferMenstrual CycleLuteal PhaseReagent Kits, DiagnosticEstrusFertilityOocyte RetrievalFollicular FluidBirth RateOocytesLeuprolideTime FactorsProspective StudiesTreatment OutcomeOvulation InhibitionEndometriumSperm Injections, IntracytoplasmicMenstruationRetrospective StudiesUterusRecombinant ProteinsLitter SizeCorpus LuteumEmbryo ImplantationAromatase InhibitorsDrug ResistanceEstrus SynchronizationFollicular PhaseLaparoscopyCryopreservationPredictive Value of TestsProto-Oncogene Proteins c-kitSheepEstrus DetectionGranulosa CellsRNA, MessengerSexual MaturationAnestrusRandomized Controlled Trials as TopicBreedingRisk FactorsEstrous CyclePrognosisCattlePregnanediolCells, CulturedDinoprostProestrusPostpartum PeriodReproductionProgesterone CongenersFetal ViabilityGene Expression RegulationSignal TransductionFallopian TubesInhibinsPituitary Hormone-Releasing HormonesTheca CellsFollow-Up StudiesMultivariate AnalysisApoptosis