Paulk, C B Effect of dietary zinc and ractopamine hydrochloride on pork chop muscle fiber type distribution, tenderness, and color characteristics. [electronic resource] - Journal of animal science May 2014 - 2325-35 p. digital Publication Type: Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't ISSN: 1525-3163 Standard No.: 10.2527/jas.2013-7318 doi Subjects--Topical Terms: Adrenergic beta-Agonists--administration & dosageAnimal Feed--analysisAnimal Nutritional Physiological PhenomenaAnimalsDiet--veterinaryDietary SupplementsMeat--standardsMuscle Fibers, Skeletal--physiologyPhenethylamines--administration & dosageSwineZinc--administration & dosage