McGill, E. et al. 2012. Low Crude Protein Corn and Soybean Meal Diets with Amino Acid Supplementation for Broilers in the Starter Period. 2. Effects of Feeding 13% Crude Protein. International Journal of Poultry Science. 11, 3 (Feb. 2012), 166–171. DOI:https://doi.org/10.3923/ijps.2012.166.171.