OpossumsEstrusEstrus DetectionEstrus SynchronizationMonodelphisDidelphisInsemination, ArtificialMelengestrol AcetateOvulationProgesteroneProgesterone CongenersEstrous CycleMarsupialiaDiestrusDinoprostPregnancySexual MaturationCattleFertilityPregnenedionesPostpartum PeriodEstradiolProestrusLitter SizeGonadotropins, EquineReproductionSwineTime FactorsAdministration, IntravaginalWeaningLactationOvarySexual Behavior, AnimalLuteinizing HormoneCorpus LuteumPregnancy, AnimalDrug ImplantsPregnadienesAnestrusRandom AllocationOvarian FolliclePregnancy RateGonadotropin-Releasing HormoneSodium-Phosphate Cotransporter ProteinsMacropodidaeKidney Tubules, ProximalUterusHousing, AnimalFertility AgentsMetestrusBreedingAnimal HusbandryEsophagusFertilization