1962 年 15 巻 4 号 p. 306-309
Polished rice powder with addition of salt mixture and vitamin mixture was used as the basal diet. Supplement with L-lysine and DL-threonine improved markedly the growth of rats, but further addition of L-tryptophan did not stimulate the growth. Further addition of.DL-methionine with or without L-tryptophan to the diet supplemented with lysine and threonine did not improve the growth rate. The supplement of a small amount of L-lysine (0.025 to 0.4%) to the basal diet was also ineffective.