Abstract
A basal diet was prepared using mainly vegetable materials, vitamins, minerals and anti-b iotics. Each 15 young chicks were fed on the experimental diet in a wire cage for 30 days The growth rate and feed efficiency were increased about 6% by the addition of 0.3% aspartic acid. But the viscera distribution and the activities of xanthine dehydrogenase and cholin oxidase of liver were scarcely influenced.
The basal diet was supplemented with or without tryptophan, lysine, both of them, orad istillers feed to prepare 6 kinds of diet, and 0.3% of aspartic acid or glycine was added. There were no differences in the growth rate, feed efficiency and viscera distribution on average of feeding experiments, but the weights of testes of the aspartic acid groups were a little larger.
