Nguyen Thi Kim Dong and Nguyen Van Thu 2021 Effect of dietary levels of Tra fish (Pangasius hypophthalmus) oil supplementation on nutrient utilization, growth performance and carcass traits of Noi chicken in Mekong delta, Vietnam. Livestock Research for Rural Development. Volume 33, Article #147. Retrieved , from http://www.lrrd.org/lrrd33/12/33147ntkdo.html