1. Aboul-Ela S, Abdel-Rahman GA, Ali FA, Khamis HS and Abd El-Galil KH 1996. Practical recommendations on minimum and maximum fiber levels in rabbit diets. In Proceedings of the Sixth World Rabbit Congress (ed. F Lebas), vol. 1, pp. 67–72. Association Française de Cuniculture, Lempdes, France.
2. Al-Bar AM and Al-Aghbari AM 1996. Influence of deodorase in combination with different levels of protein on rabbits feed intake, body weight, and utilization of urea. In Proceedings of the Sixth World Rabbit Congress (ed. F Lebas), vol. 1, pp. 79–84. Association Française de Cuniculture, Lempdes, France.
3. Official methods of analysis,2000
4. effect of graded levels of raw and processed rapeseed on feed digestibility and nutrient utilization in young pigs;Aumaitre;Animal Feed Science and Technology,1989
5. Studies on the production of volatile fatty acids from grass by rumen liquor in an artificial rumen. I. The volatile fatty acid production of fresh grass;Barnett;Journal of Agricultural Science, Cambridge,1957