1. Department of Animal Science, Faculty of Agriculture, Tropical Feed Resources Research and Development Center (TROFREC), Khon Kaen University, Khon Kaen, Thailand
2. Faculty of Animal Science and Technology, Maejo University, Chiang Mai, Thailand
3. Dairy Farming Promotion Organization of Thailand, Northeast Region (DPO), KhonKaen, Thailand
4. Faculty of Technology, School of Animal Production Technology, Udon Thani Rajabhat University, Udon Thani, Thailand
5. Faculty of Natural Resources, School of Animal Science, Rajamangala University of Technology ISAN Sakon Nakhon Campus, Sakon Nakhon, Thailand
6. Department of Animal Production Technology, Faculty of Agro-Industrial Technology, Kalasin University, Kalasin, Thailand
7. National Institute of Education, Phnom Penh, Cambodia