1. Aebi, H. E., and E. G. Berger, 1980. Nutrition and Enzyme Regulation. Hans Huber Publishers, Bern, Switzerland.
2. Utilization of amino acids by chicks;Almquist;Arch. Biochem. Biophys.,1954
3. The energetic efficiency of amino acid metabolism;Buttery,1976
4. Reduction in abdominal fat content and broiler chickens by the addition of feather meal to finisher diets;Cabel;Poultry Sci.,1987
5. Combs, C. F., 1965. Amino acids and protein levels on feed intake and body composition. Pages 88–99 in: Proc. Md. Nutr. Conf. Univ. of Maryland, College Park, MD.