Inthapanya S, Preston T R, Ngoan L D and Phung L D 2019 Effect of a simulated rice distillers’ byproduct on methane production in an in vitro rumen incubation of ensiled cassava root supplemented with urea and leaf meal from sweet or bitter cassava. Livestock Research for Rural Development. Volume 31, Article #164. Retrieved , from http://www.lrrd.org/lrrd31/10/sang31164.html