Silivong P, Onphachanh X, Ounalom A and Preston T R 2013: Methane production in an in vitro rumen incubation is reduced when leaves from Mimosa pigra are the protein source compared with Gliricidia sepium. Livestock Research for Rural Development. Volume 25, Article #131. Retrieved , from http://www.lrrd.org/lrrd25/7/sili25131.htm