Sitone kongvongxay,  Preston T R  and Vanthong Pheangvichit 2011 Effect of supplements of sugar cane and foliage of Gliricidia sepium on feed intake and growth performance of local goats fed foliage of Tithonia diversifolia as basal diet. Workshop on Reducing Greenhouse Gas Emissions from Livestock and Soils (Editors: Reg Preston and Sisomphone Southavong). National Institute of Animal Science, Hanoi, 14-15 November 2011. httm://www.mekarn.org/workshops/GHG-CC/sitone.htm