1. Department of Animal Sciences, Can Tho University, Can Tho, Viet Nam
2. Department of Animal Sciences, Division of Nutritional Sciences, University of Illinois, Urbana, IL, USA
3. Technopolis, Suranaree University of Technology, Nakhon Ratchasima, Thailand
4. Department of Agricultural Technology, Can Tho University, Hau Giang, Viet Nam