EstrusGonadotropinsChorionic GonadotropinEstrus DetectionEstrus SynchronizationGonadotropins, EquineChorionic Gonadotropin, beta Subunit, HumanReceptors, GonadotropinGonadotropins, PituitaryLuteinizing HormoneOvulationFollicle Stimulating HormoneProgesteroneInsemination, ArtificialGonadotropin-Releasing HormoneOvaryEstradiolMelengestrol AcetatePregnancyEnzyme InductionEstrous CycleProgesterone CongenersOvarian FollicleDiestrusSexual MaturationReceptors, LHDinoprostProestrusCorpus LuteumCattleGlycoprotein Hormones, alpha SubunitPituitary GlandFertilityTestosteroneSwineFollicle Stimulating Hormone, beta SubunitPregnenedionesReproductionPituitary Hormone-Releasing HormonesOvulation InductionPostpartum PeriodFertility Agents, FemaleLuteinizing Hormone, beta SubunitAnestrusPregnancy RateRNA, MessengerLitter SizeTime FactorsGranulosa CellsSuperovulationPregnancy, AnimalReceptors, FSHOvariectomyLactationDrug ImplantsAdministration, IntravaginalWeaningChoriocarcinomaUterusSexual Behavior, AnimalRandom AllocationHypogonadismInhibinsReceptors, LHRHSheepPituitary Gland, AnteriorCells, CulturedProlactinLeydig CellsTestisMetestrusFertility AgentsRadioimmunoassayPregnadienesGonadotrophsGene Expression RegulationLuteal PhaseMenotropinsFertilizationProgestinsCastrationTrenbolone AcetateHorsesBreedingFollicular FluidProstaglandins FDose-Response Relationship, DrugMolecular Sequence DataLeuprolideFollicular PhaseCell LineGonadal Steroid HormonesEstrogensSignal TransductionHormonesInjections, IntramuscularTheca CellsCopulationHypothalamusLuteolysis