El-Hakim, A. A.; Cherian, G.; Ali, M. Use of Organic Acid, Herbs and Their Combination to Improve the Utilization of Commercial Low Protein Broiler Diets. Int. J. Poult. Sci. 2008, 8 (1), 14–20. https://doi.org/10.3923/ijps.2009.14.20.