AnestrusEstrusCattleLuteinizing HormoneProgesteroneSeasonsBreedingSheepSexual MaturationEstradiolPituitary Hormone-Releasing HormonesOvulationDrug ImplantsReproductionPostpartum PeriodFollicle Stimulating HormoneOvarian FollicleBuffaloesPregnancyGonadotropin-Releasing HormoneLactationEstrus SynchronizationAnimal Nutritional Physiological PhenomenaAnimal HusbandryOvaryCorpus LuteumRandom AllocationFertilityEstrus DetectionMelengestrol AcetateDairyingOvariectomyCattle DiseasesGlucose Clamp TechniqueAnimal FeedPregnancy, AnimalSecretory RateDeerProlactinGonadotropins, EquineEstrous CycleBody WeightDinoprostPeriodicityGonadotropins, PituitaryWeaningLuteal PhaseInsemination, ArtificialWeight GainLeast-Squares AnalysisDystociaFood DeprivationCastrationInfusion Pumps, ImplantableRadioimmunoassayInsulin AspartDietProgesterone CongenersInsulinTrenbolone AcetatePituitary GlandBlood GlucoseBromocriptineOvulation InductionPregnenedionesSexual Behavior, AnimalTime FactorsFeedbackMelatoninFollicular PhasePhotoperiodHyperinsulinismMeatChorionic GonadotropinPregnadienesRumen