Linh N T, Kim Dong N T and Thu N V 2018: A study of replacing dietary crude protein of fish meal by catfish (Pangasius hypophthalmus) by-products on growth performance and meat quality of Muscovy ducks. Livestock Research for Rural Development. Volume 30, Article #202. Retrieved , from http://www.lrrd.org/lrrd30/12/ntkdo30202.html