Porsavathdy P, Do H Q and Preston T R 2017: Growth rate and feed conversion were improved, and emissions of methane reduced, when goats fed a basal diet of pigeon wood foliage (Trema orientalis) were supplemented with sun-dried cassava foliage (Manihot esculenta, Crantz) or water spinach (Ipomoea aquatica). Livestock Research for Rural Development. Volume 29, Article #68. Retrieved , from http://www.lrrd.org/lrrd29/4/phho29068.html