Amaefule K U, Okechukwu S O, Ukachukwu S N , Okoye F C and Onwudike O C 2006: Digestibility and nutrient utilization of pigs fed graded levels of brewers' dried grain based diets. Livestock Research for Rural Development. Volume 18, Article #5. Retrieved , from http://www.lrrd.org/lrrd18/1/amae18005.htm