Pousga, S. (2007) “Evaluation of Traditional Sorghum (Sorghum bicolor) Beer Residue, Shea-Nut (Vitellaria paradoxa) Cake and Cottonseed (Gossypium Spp) Cake for Poultry in Burkina Faso: Availability and Amino Acid Digestibility”, International Journal of Poultry Science, 6(9), pp. 666–672. doi:10.3923/ijps.2007.666.672.