Estrus SynchronizationEstrusInsemination, ArtificialMelengestrol AcetateFertility AgentsProgesterone CongenersCortical SynchronizationDinoprostEstrus DetectionAdministration, IntravaginalProgesteroneOvulationPregnancy RatePregnenedionesFertility Agents, FemaleCattleFertilizationPregnancyGonadotropin-Releasing HormoneEstradiolElectroencephalography Phase SynchronizationEstrous CycleBiological ClocksOscillometryDiestrusPeriodicityFertilityPregnadienesPostpartum PeriodSexual MaturationTime FactorsGonadotropins, EquineIntercostal NervesReproductionAction PotentialsNerve NetLitter SizeElectroencephalographyDrug ImplantsProestrusBeta RhythmLuteinizing HormoneModels, NeurologicalCorpus LuteumSwineLactationPregnancy, AnimalThoracic NervesOvarian FollicleWeaningRandom AllocationSexual Behavior, AnimalOvaryNeuronsAlpha RhythmPessariesNonlinear DynamicsMagnetoencephalographyAnestrus