Lecomte P, Hiep Tran, Salgado P and Trach Nguyen Xuan 2009 Prediction of methane production in dairy cows in tropical countries based on fecal near infrared reflectance spectroscopy. Proceedings MEKARN Workshop on Livestock, Climate Change and the Environment (Editors: Reg Preston and Vo Lam ), An Giang University, Vietnam, 16-18 November 2009 http://www.mekarn.org/workshops/environ/Abstracts/tran.htm