1. Swine Science Division, National Institute of Animal Science, Cheonan-si, Republic of Korea
2. Planning and Coordination Division, National Institute of Animal Science, Cheonan-si, Republic of Korea
3. Animal Bio-technology Division, National Institute of Animal Science, Iseo-myeon, Republic of Korea
4. Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
5. Division of Animal and Dairy Sciences, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, Republic of Korea