Chhay Ty and Preston T R 2006: Effect of water spinach and fresh cassava leaves on growth performance of pigs fed a basal diet of broken rice. Workshop-seminar "Forages for Pigs and Rabbits" MEKARN-CelAgrid, Phnom Penh, Cambodia, 22-24 August,  2006. Article #5 Retrieved, from http://www.mekarn.org/proprf/chha1.htm