1. United Graduate School of Veterinary Sciences Iwate University Morioka Japan
2. Miyagi Prefectural Federation of Agricultural Mutual Aid Association Miyagi Japan
3. Meiji Feed Company Limited, Mito Research Center Tohoku University Sendai Japan
4. Laboratory of Nutrition, Graduate School of Agricultural Science Tohoku University Sendai Japan
5. Cooperative Department of Veterinary Medicine, Faculty of Agriculture Iwate University Morioka Japan