CastrationOrchiectomyTestosteroneAndrogensProstateDihydrotestosteroneSeminal VesiclesWorkAndrogen AntagonistsReceptors, AndrogenFlutamideAnxiety, CastrationClonixinCyproteroneTestisAnimal WelfareGonadotropin-Releasing HormoneEpididymisTosyl CompoundsNeoplasms, Hormone-DependentButorphanolEstradiolOrgan SizeHaptoglobinsDrug ImplantsAnesthesia, LocalKetoprofenZeranolLuteinizing HormoneAndrogen Receptor AntagonistsXylazineGonadal Steroid HormonesOvariectomyHornsAnilidesSexual MaturationLeuprolideTestosterone PropionateHydrocortisoneScrotum5-alpha Reductase InhibitorsTrematodaAzasteroidsSex CharacteristicsProstate-Specific AntigenTime FactorsRandom AllocationHarderian GlandAnesthesia, CaudalLidocaineFinasterideRats, Inbred StrainsFollicle Stimulating HormoneThiazinesWork Schedule ToleranceCattleWork Capacity EvaluationShrewsAnimal HusbandryDiagnostic Techniques, RadioisotopeFeminizationGonadotropins, PituitaryPituitary Hormone-Releasing HormonesRNA, MessengerAndrogen-Binding ProteinAntineoplastic Agents, HormonalPenisRats, Sprague-DawleyEatingReturn to WorkCyproterone AcetateBehavior, AnimalHormonesCopulationAnalgesiaSwineEstrogensGenitalia, MaleBuserelinPituitary GlandResorcinolsClusterinNitrilesSex FactorsPhenylthiohydantoinDiethylstilbestrolAndrostane-3,17-diolGoserelinPenile ErectionAnesthetics, CombinedAndrostenolsBody WeightAnimals, NewbornPreoptic AreaPituitary Gland, AnteriorRats, WistarAgingNeoplasm TransplantationVeterinary MedicineApoptosis