Bui Huy Nhu Phuc and Ogle B 2005: Effects of inclusion of cassava leaf in the diets on the performance of pregnant sows.  Workshop-seminar "Making better  use of local feed resources" (Editors: Reg Preston and Brian Ogle) MEKARN-CTU, Cantho, 23-25 May, 2005. Article #31. Retrieved, from http://www.mekarn.org/proctu/phuc31.htm