Watkins, L E The effect of various levels of ractopamine hydrochloride on the performance and carcass characteristics of finishing swine. [electronic resource] - Journal of animal science Nov 1990 - 3588-95 p. digital Publication Type: Journal Article ISSN: 0021-8812 Standard No.: 10.2527/1990.68113588x doi Subjects--Topical Terms: Adipose Tissue--drug effectsAdrenergic beta-Antagonists--pharmacologyAnimalsEatingFemaleGrowth Substances--pharmacologyMaleMuscle DevelopmentMuscles--drug effectsPhenethylamines--pharmacologySwine--anatomy & histologyWeight Gain--drug effects