AnestrusPostpartum PeriodCattleEstrusProgesteroneLuteinizing HormoneLactationSeasonsEstrus SynchronizationPregnancyPituitary Hormone-Releasing HormonesOvulationBreedingRandom AllocationInsemination, ArtificialSheepReproductionAnimal HusbandryEstradiolAnimal Nutritional Physiological PhenomenaProgesterone CongenersGonadotropin-Releasing HormonePregnenedionesAnimals, SucklingDinoprostPregnancy, AnimalOvarian FollicleCarthamus tinctoriusCorpus LuteumAnimal FeedMilkDrug ImplantsFollicle Stimulating HormoneCattle DiseasesLeast-Squares AnalysisFertilityLuteal PhaseBuffaloesBody WeightOvaryPoaceaeWeaningEstrus DetectionEstrous CycleOvariectomyProlactinGonadotropins, EquineWeight GainDeerGonadotropins, PituitaryPregnancy RateClonixinRumenOvulation InductionPinus ponderosaSecretory RateDietDigestionTime FactorsAdministration, IntravaginalMastitis, BovineEnclomipheneMagnesium OxideParturitionDairyingEatingFood DeprivationRadioimmunoassayBody ConstitutionAnovulationSexual Behavior, AnimalDietary ProteinsSexual MaturationPituitary GlandPeriodicityPlant PoisoningFertilizationFertility AgentsInfusion Pumps, ImplantableChorionic GonadotropinFood TechnologyEnergy IntakeBody CompositionCastrationMineralsLasalocidDystociaParityLabor, ObstetricBromocriptineTetanyUnited States Department of AgricultureFood, FortifiedInjections, IntramuscularPhotoperiodAbortion, Veterinary