McGill, E., Kamyab, A., & Firman , J. (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), 166–171. https://doi.org/10.3923/ijps.2012.166.171