目前已查明用两种激素——性甾族化合物和甲状腺制剂可加速鱼的生长,而且这两种激素在肠道内不起破坏作用,因而可把它添加入饵料成分内。关于用甲状腺制剂加速鲑鱼生长的资料过去已有介绍(Piggins,1962; It has now been determined that the growth of fish is accelerated by the use of two hormones, the sex steroid and the thyroid preparation, and that these two hormones are not damaging in the intestine and therefore can be added to the feed ingredients. Information on the use of thyroid preparations to accelerate salmon growth has been introduced in the past (Piggins, 1962;