A method for increasing the growth rate and/or improving the lean meat to fat ratio in farm and domestic animals. An effective amount of a 3-amino-4-hydroxy(or alkoxy) phenethanolamine derivative, pharmacologically-acceptable acid addition or metal salt thereof is administered either orally or parenterally to animals. Novel 3-amino-4-hydroxy(or alkoxy)phenethanolamine derivatives are also described.
一种提高农场和家畜生长速度和/或改善瘦肉与脂肪比率的方法。 给动物口服或肠外注射有效量的 3-
氨基-
4-羟基(或烷氧基)
苯乙醇胺衍
生物、药理学上可接受的酸添加物或其
金属盐。 还描述了新型 3-
氨基-
4-羟基(或烷氧基)
苯乙醇胺衍
生物。