1972 Volume 9 Issue 6 Pages 281-285
Population standard deviation of nitrogen-corrected metabolizable energy of a certain diet, σ, when fed to individual chick, is evaluated to be 0.124kcal/g diet. Based on this value, population standard deviation of metabolizable energy of a feed ingredient, σing estimated by feeding both test diet with 100α% of the ingredient and basal diet to r groups each of n chicks each is also calculafed from σ. At various n, r and α, σing is calculated and presented in Table 1.
Formulas to calculate the confidence interval of metabolizable energy of an ingredient, MEing, and the least significant difference between two values MEing are presented with the examples of calculation.