1. Official Methods of Analysis AOAC, 934.01 for dry matter; 920.39C for fat, AOAC 923.03 for ash; 968.08 for calcium and phosphorus adapted for an inductively coupled plasma (ICP);AOAC International,1990
2. AOAC International 1995. Official Methods of Analysis AOAC 990.03 for Nitrogen. AOAC, Arlington, VA, USA.
3. Partitioning of fat and protein in energy retention of growing animals;Boekholt;European. J. Nut,1997
4. Broiler Management Guide;Cobb500,2012
5. Broiler Performance and Nutrition Supplement;Cobb500,2015