1. Adugna, T, 2008. Feed resources and feeding management: a manual for feedlot operators and development workers. Ethiopia Sanitary and Phyto-sanitary Standards and Livestock and Meat Marketing Program (SPS-LMM), Addis Ababa, Ethiopia. 48p.
2. AOAC, 1990. Association of analytical chemists. Official methods of analysis. 15th Edition. AOAC Inc, Arlington, Virginia, USA. 957p.
3. ARC, 1990. Agricultural Research Council. The nutrient requirement of ruminant livestock. Common Wealth Agricultural Bureaux. Slough, England. pp:65-71
4. Nguyen Xuan Ba, Nguyen Huu Van, Le Duc Ngoan, Clare, M. L., Peter, T. D., 2008. Effects of amount of concentrate supplement on forage intake, diet digestibility and live weight gain in Yellow Cattle in Vietnam. Asian-Aust. J. Anim. Sci. 21(12): 1736 – 1744.
5. Belibasakis, N. G. and Tsirgogianni, A. D., 1996. Effects of wet BSG on milk yield, milk composition and blood components of dairy cows in hot weather. Anim. Feed Sci.Technol., 57: 175-181.