Abdel-Malak, N.Y., Abdel-Malak, M.S., El Gendi, G.M. and Naguib, E.F.
1995. Effect of feeding different levels of herbal feed additives on broiler performance in relation to some metabolic functions. Egypt. Poult. Sci.
1971. Automated analysis Beohringer Mannheim. Clin Acta. 31:87.
El- Gendi, G.M., El-Wardany, and Iraqi, M.M.
1999. Physiological responses of the inclusion of egg-plus in diets of laying hens and its effect on productive performance. Egyptian J. Nutrition and feeds
2 (Special Issue):633–648.
Hattaba, N.A., Ibrahim, S.A., Faham, A.I. and El-Shickh, M. A.
1994. Utilization of enzyme preparation kemzyme in layer rat ions. 2nd Scientific conference on Poultry 12-13 Sep (1994) Kafr El Shickk, Egypt.
Khodary, R.M., El-Ezzawy, M.H. and Hamdy, I.R.
1996. Effect of Nigella sativa on egg production, hatchibility percentage and some biochemical values in laying hens with reference to fertility in cockerels. 7th Sci. Cong., Fac. Vet. Med., Assuit Univ., 17-19 Nov. Egypt.
1993 Enzymes as Poultry feed supplement. 4th Sci. Symp. For Animal, Poultry and Fish Nutrition. El- Fayoum, Egypt.
Mohan, B., Kadirvel, R., Bhaskaran, M. and Natarajan, A.
1995. Effect of probiotic supplementation on serum/youk cholesterol and egg shell thickness in layer. Brit. Poult. Sci., 36:799–803.
Murray, R.K., Granner, D.K., Mayes, P.A. and Rodwell, V.W.
1991. The text book on Harper's biochemistry, twenty-second edition, Appleton & Large, Norwalk, Connecticut/Los Altos, California.
National Research Council
1994. Nutrient requirements of quail 9th ed. National Academic of Science. Washington, DC. USA.
Palmer, R.J., 1990. Prostaglandins and the control of muscle protein synthesis and degradations leukotrienes essent, fatty acids. Poultry Sci.
Radwan, M.A., Abd Allah, G.A., Fayek, H.M. and Brieweah, M.A.
1995. The effect of three types of feed additives on the productive performance of layers. Frist Egyptian Hangarian Conf. 17-19 September, Alexandria, Egypt.
Snedecor, G.W. and Cochran, W.G., 1980. Statistical Methods. 7th ed. The Iowa State University Press. Ames, Iowa.
1946. Test-combination, total protein calorimetric method. Ann. J Clin. Path
1987. Effect of feed additives on broiler performance. Ph. D. Thesis. El-Azhar Univ. Faculty of Agriculture, Cairo