Pousga, S., Boly, H., Lindberg, J., & Ogle, B. (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), 666–672. https://doi.org/10.3923/ijps.2007.666.672