Tufarelli, V. et al. 2007. Effect of Xylanase Supplementation and Particle-Size on Performance of Guinea Fowl Broilers Fed Wheat-Based Diets. International Journal of Poultry Science. 6, 4 (Mar. 2007), 302–307. DOI:https://doi.org/10.3923/ijps.2007.302.307.