SeleniumEstrusVitamin EEstrus DetectionEstrus SynchronizationAdministration, OralSelenious AcidProestrusSelenomethionineGlutathione PeroxidaseOvulationVitamin AVitaminsOrganoselenium CompoundsSodium SeleniteVitamin DSelenoprotein PProgesteroneDietary SupplementsSelenoproteinsVitamin B 12Vitamin A DeficiencyAntioxidantsDietLuteinizing HormoneEstradiolVitamin D Deficiencyalpha-TocopherolAscorbic AcidInsemination, ArtificialAnimal FeedTocopherolsRandom AllocationMelengestrol AcetateVitamin K 1SwineAnimal Nutritional Physiological PhenomenaVitamin B 6Selenic AcidVitamin B 12 DeficiencyProgesterone CongenersDose-Response Relationship, DrugEstrous CycleBody WeightDinoprostSelenium RadioisotopesPregnancyLiverDiestrusCattleVitamin K DeficiencyVitamin B 6 DeficiencyTocotrienolsCholecalciferolOrgan Sizebeta CaroteneLactationSexual MaturationFertilityPostpartum Periodgamma-TocopherolPregnenedionesLitter SizeWeaningReproductionLipid PeroxidationSelenium OxidesSelenocysteinePregnancy, AnimalReceptors, CalcitriolVitamin D-Binding ProteinNutritional StatusGonadotropins, EquineTrace ElementsFood, FortifiedCarotenoidsTime FactorsPyridoxineAdministration, IntravaginalOxidative StressAvitaminosisCorpus LuteumLipid PeroxidesOvaryNailsSexual Behavior, AnimalDrug ImplantsVitamin K 2PregnadienesNutritional RequirementsAnestrusOvarian FollicleCalcifediolPregnancy RateGonadotropin-Releasing HormoneSheepMalondialdehydeCalcitriolThiobarbituric Acid Reactive SubstancesAnimal Husbandry