Sangkhom I, Khang D N, Leng R A and Preston T R 2011: Effect of potassium nitrate as modifier of the fermentation in an in vitro incubation using as substrate NaOH and/or lime treated straw supplemented with fresh cassava leaves. Livestock Research for Rural Development. Volume 23, Article #204. Retrieved , from http://www.lrrd.org/lrrd23/10/sang23204.htm