Bui Xuan Men and Nguyen Thanh Cong 2010 Golden apple snails and Tra fish by-products as protein supplements in diets of fattening ducks. (Editor: Reg Preston) International Conference on Livestock, Climate Change and Resource Depletion, Champasack University, Pakse, LAO PDR, 9-11 November 2010 . httm://www.mekarn.org/workshops/pakse/html/bxmen.htm