Nguyen Nhut Xuan Dung, Pham Quang  Minh , Luu Huu Manh, Vo Minh Goi and Ogle B 2008 Effect of different techniques for fermenting liquid feed on performance and Enterobacteria counts of grower and finisher pigs. 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/xdung1.htm