Trenbolone AcetateAnabolic AgentsDrug ImplantsZeranolEstrenesMeatCattleEstradiolMelengestrol AcetateTrimethylsilyl CompoundsDrug CombinationsRandom AllocationUnited States Department of AgricultureWeight GainAcetatesDystociaBody CompositionPhenethylaminesMuscle DevelopmentAnimal FeedTestosteroneEatingCyproterone AcetateAdipose TissueMuscle, SkeletalInsulin-Like Growth Factor IFetal Stem CellsBody WeightNandroloneSomatotypesDoping in Sports