1. Nutrient Requirements of Poultry;National Research Council,1994
2. Ingredient Analysis Table: 1995 Edition;Dale,1995
3. Nutrition of the Chicken;Scott,1982
4. Official Publication of AAFCO, Ga;Association of American Feed Control Officials, Inc.,1994
5. European Table of Energy Values for Poultry Feedstuffs;Janssen,1988