1. Abdel‐Aal, A.E., El‐Ashry, A.M., Ibrahim, I.I. and Elwan, K.M. 1985. Abstracts on the 2nd National Cong. of Biochemistry. 1985, Cairo. pp.141
2. Abd El‐Basit, M., Omar, E. and Noun, A.M. 1987. Univ. Conf. of Agric. Sci. on Food Defficiency Overcoming Through Autonomous Efforts. 1987, Egypt. pp.786
3. Armstrong, D.G. and Ross, I.P. 1968. Proc. 2nd Nutr. Conf. of Feed Manufacturers. 1968, Nottingham, U.K. pp.1