Gebremeskel G and Kefelegn K 2011: Feed utilization, digestibility and carcass parameters of Tigray highland sheep fed urea treated wheat straw supplemented with mixtures of wheat bran and noug seed cake, in Southern Tigray, Ethiopia. Livestock Research for Rural Development. Volume 23, Article #184. Retrieved , from http://www.lrrd.org/lrrd23/9/gebr23184.htm