Estrus DetectionInsemination, ArtificialEstrusEstrus SynchronizationInseminationInsemination, Artificial, HomologousInsemination, Artificial, HeterologousProgesteronePregnancyCattleOvulationMelengestrol AcetateFertilityPregnancy RateProgesterone CongenersSemen PreservationFertilizationEstrous CycleDinoprostPostpartum PeriodLitter SizePregnenedionesDiestrusLactationReproductionSpermatozoaSperm TransportPregnancy, AnimalEstradiolOvulation InductionGonadotropins, EquineTime FactorsSuperovulationSwineSemenSexual Behavior, AnimalOvarian FollicleDairyingOvulation DetectionSexual MaturationFertility Agents, FemaleLuteinizing HormoneAdministration, IntravaginalSperm MotilityBreedingUterusGonadotropin-Releasing HormoneWeaningRandom AllocationOvaryCorpus LuteumDrug ImplantsSperm CountFertilization in VitroProestrusInfertilityAnimal HusbandryCopulationCryopreservationFertility AgentsAnestrusChorionic GonadotropinFlurogestone AcetateSperm-Ovum InteractionsMilkFollicle Stimulating HormoneClomiphenePregnadienesSheepInfertility, FemaleFallopian Tubes