multiple regression analysis of the type : y = beta0 + beta1x1 + beta2x2 + b3x3 + b4x4 where y = rate of weight gain x1 = dietary protein level , x2 = protein efficiency ratio , x3 = appetite factor , and x4 = energy/protein ratio , showed that the maximum rate of weight gain of 58.8 g/week occurred when the diet contained 23 % protein .
C0012177
dietary protein
C0033684
protein