1. Abd El-Rahman, S.A., Khidr, R.E. and Abou-El-Nasr, H.M., 1999. Date stone meal a source of energy in layer diets. Egyptian Poultry Science Journal, 19, 307–323.
2. Aggoor, F.A.M., Attia, Y.A. and Qota, E.M.A., 2000. A study on the energetic efficiency of different fat sources and levels in broiler chick vegetable diets. Journal of Agricultural Science of Mansoura University, 252, 801–820.
3. Aldhaheri, A., Alhadrami, G., Aboalnaga, N., Wasfi, I. and Elidi, M., 2004. Chemical composition of date pits and reproductive hormonal status of rats fed date pits. Food Chemistry, 86, 93–97.
4. Al-Homidan, A.H., 2003. Date waste, whole dates and date pits as ingredients in broiler diets. Egyptian Poultry Science Journal, 23, 15–35.
5. Association of Official Analytical Chemists AOAC, 2004. Methods of analysis, 15th Ed., Arlington, USA.