in the present study , diets containing 13 , 16 , 19 or 23 % protein and 70 % carbohydrate calories were fed to ross male chicks from 1 to 4 weeks of age to determine the effect of dietary protein level ( % crude protein ) on growth and intermediary metabolism in 2 , 3 , and 4-wk old chicks .
C0012177
dietary protein
C0033684
protein