1. AFRC, 1992. Technical committee on responses to nutrients, Report No 9. Nutritive requirements of ruminant animals: protein. Nutr. Abstr. Rev., Ser. B, (62), 787–835.
2. AOAC, 1990. Official methods of analysis 14th edition. Association of Official Analytical Chemists. Washington, D.C., USA.
3. ARC, 1980. The nutrient requirements of ruminant livestock. Technical Review, Farnham Royal, CAB.
4. Nitrogen utilization of lambs fed limpograss supplemented with molasses–urea or legume protein supplements;Bates;Nutr. Rep. Int.,1988
5. Bonsi, M.L.K., 1995. The role of fodder trees in the utilization of roughage by sheep. University of Science and Technology, Kumasi. PhD Thesis. 275 pp.