摘要：Summary The aim of this paper was to research the eff ect of β-adrenergic antagonist ractopamine on chemical composition of pig meat and to determine the level of accumulated remains after applying anabolic treatment on pigs as experimental animals. The treatment was conducted by oral use of subchronic dose of ractopamine of 0.1 mg/kg of body weight daily during the period of 28 days. At the end of the treatment, a chemical composition was researched by determining shares of water, raw proteins, fat and collagen in the meat sampled from the treated animals on the fi rst, third and eighth day after the treatment and on samples of control animals as well, by using standard methods of analysis. By using a validated immunoenzymatic method in meat samples, concentrations of ractopamine remains were determined. Research results haven’t pointed to signifi cant changes in the chemical composition of meat of the treated animals and a weak cumulation of ractopamine remains in meat with peak mean concentration values from 391±62 ng/kg and 450±65 ng/kg on the fi rst day after the treatment. On the third and eighth day after the treatment, ractopamine concentration values in all the analyzed samples were equal to detection limit (300 ng/kg) of the test method or the remains weren’t detected.
关键词：ractopamine; anabolic treatment; pigs; chemical composition of meat; remains in meat
