AbattoirsCattleCattle DiseasesMeatAnimal HusbandryAnimal FeedSwineBody CompositionBreedingRandom AllocationWeight GainAnimal Nutritional Physiological PhenomenaBody WeightAnimal Identification SystemsSwine DiseasesFood TechnologyZeranolTrimethylsilyl CompoundsWeaningUnited States Department of AgricultureSheepTuberculosis, BovineLeast-Squares AnalysisMeat-Packing IndustryAdipose TissueHousing, AnimalTrenbolone AcetateHandling (Psychology)SkatoleFecesAnimal WelfareEatingTransportationRumenMuscle, SkeletalDietDrug Implants