EstrusEstrus DetectionCopulationEstrus SynchronizationProgesteroneSexual MaturationSexual Behavior, AnimalEstradiolCattleLuteinizing HormonePregnancyInsemination, ArtificialMelengestrol AcetateOvulationBehavior, AnimalEstrous CycleProgesterone CongenersDiestrusDinoprostFertilityPregnenedionesPostpartum PeriodProestrusBehavioral SymptomsReproductionLitter SizeGonadotropins, EquineSwineWeaningLactationAdministration, IntravaginalMotor ActivityRandom AllocationPregnancy, AnimalCorpus LuteumDrug ImplantsBehavioral SciencesBehavioral MedicineOvaryTime FactorsPregnadienesAnestrusOvarian FollicleGonadotropin-Releasing HormonePregnancy RateBehaviorUterusGenetics, BehavioralBehavioral ResearchExploratory BehaviorFertility AgentsAnimal HusbandryHousing, AnimalMetestrusBreedingOvariectomyFertilizationRats, Sprague-DawleyBehavior TherapyAnalysis of VarianceTrenbolone AcetateBrainSheepFollicle Stimulating HormoneProgestinsMaze LearningAnimals, SucklingBody WeightPessariesProstaglandins FDairyingParityEconomics, BehavioralFertility Agents, FemaleInjections, IntramuscularSocial BehaviorVaginaChorionic GonadotropinAvoidance LearningLuteolysisStereotyped BehaviorFlurogestone AcetateRats, Long-EvansNeuronsPituitary Hormone-Releasing HormonesBehavioral Risk Factor Surveillance SystemPseudopregnancyChild Behavior DisordersDisease Models, AnimalAnimal FeedSuperovulationLuteal PhaseSeasonsPsychomotor PerformanceDose-Response Relationship, DrugOvulation DetectionCocaine