Nguyen Thi Duong Huyen, Nguyen Xuan Trach and Preston T R 2012 Effects of supplementation of paddy rice and/or rice grain and/or rice husk to sweet potato (Ipomoea batatas) vines as basal diet on feed intake, growth performance and digestibility of New Zealand White rabbits.  Proceedings of the International Conference "Livestock-Based Farming Systems, Renewable  Resources and the Environment", 6-9 June 2012, Dalat, Vietnam (Editors: Reg Preston and Sisomphone Southavong) http:/www.mekarn.org/workshops/dalat2012/html/huye25019.htm