Inthapanya S, Preston T R and Khang D N 2015: Methane production was reduced when cassava root (Manihot esculenta, Crant) was ensiled rather than dried, and when cassava leaves replaced water spinach (Ipomoea aquatic) as the protein source, in an in vitro rumen fermentation. Livestock Research for Rural Development. Volume 27, Article #183. Retrieved , from http://www.lrrd.org/lrrd27/9/sang27183.htm