Pheng Buntha 2005: Comparison of water extractable dry matter and neutral detergent fibre as indicators of whole tract digestibility in goats fed diets of different nutritive value (Guinea grass, Cassava foliage, Stylosanthes, Water spinach). MEKARN Mini-projects, September 2005.  Article # 10. Retrieved, from http://www.mekarn.org/MSC2005-07/protocols/bunt10.htm