Estrus DetectionInsemination, ArtificialEstrusEstrus SynchronizationInseminationInsemination, Artificial, HeterologousSemen PreservationInsemination, Artificial, HomologousPregnancyProgesteroneCattleFertilitySemenPregnancy RateSpermatozoaSperm TransportFertilizationSperm MotilityMelengestrol AcetateCryopreservationOvulationProgesterone CongenersOvulation DetectionLitter SizeSperm CountBreedingDinoprostEstrous CycleSuperovulationDairyingOvulation InductionGonadotropins, EquineFertility Agents, FemaleEjaculationPregnancy, AnimalPregnancy TestsPregnenedionesFertilization in VitroReproductionGonadotropin-Releasing HormoneFertility AgentsCopulationPhascolarctidaePostpartum PeriodCryoprotective AgentsFlurogestone AcetateOvarian FollicleLactationUterusSwineAdministration, IntravaginalTime FactorsEmbryo TransferChorionic GonadotropinAnimal HusbandrySemen AnalysisEstradiolSexual Behavior, AnimalDrug ImplantsSperm-Ovum InteractionsSex PreselectionLuteinizing HormoneFallopian TubesElephantsEndangered SpeciesInfertilityAnimals, ZooGenitalia, FemaleAcrosomeTwinning, MonozygoticInfertility, MaleOviductsDolphinsPregnanediolCarnivoraRandom AllocationViviparity, NonmammalianReproductive Techniques, AssistedAnimals, SucklingFreezingProgestinsPregnancy OutcomeOvaryUrsidaeFetal ViabilityVaginaCorpus LuteumSheepClomipheneDiestrusCloning, Organism