Siton K, Ammaly P , Phanthavong V,  Soukanh K, Vanthong P and Wanapat M 2008 Effect of salt (NaCl) addition to fresh cassava foliage on ruminal ecology, digestibility and rice straw intake in native cattle Proceedings MEKARN Regional Conference 2007: Matching Livestock Systems with Available Resources (Editors: Reg Preston and Brian Ogle), Halong Bay, Vietnam, 25-28 November 2007 http://www.mekarn.org/prohan/siton.htm