3Dalidowicz J E, et al. Ractopamine hydrochloride,a phenethanolamine repartitioning agent : Metabolism and residue. In: Hutson D H, et al. Xenobortics and Foof producing Animals, Washington D C, American Chemical Society, 1992 : 234- 243.
4Drennan W G. Can Vet J,1994,35:474.
5Hoffman R J, et al. J Toxicol Clin Toxicol, 2001,39 (4) : 339-344.
6Kopitar V Z, et al. Arzneim Forsch,1976,26:1435-1441.
7Smith D J, et al. J Anim Sci,1997,75:454-461.
8Smith D J. J Anim Sci,1998,76:3043-3053.
9Smith D J. J Anim Sci,2000,78:2903-2912.
10Wellenreiter R H. Crit Revi Poultry Biol, 1991,3 : 229- 237.
10Crome P K, Meckith F K, Carr T R, et al. Effect of ractopamine on growth performance,carass composition and cutting yields of pigs slaughtered at 107 and 125 kilograms [J]. J Anim Sci, 1996, 74: 709-716.