Authors
Minoru Yatu
Shiroishi, Japan
Mitsuhiro Sato
Shiroishi, Japan
Jin Kobayashi
Schools of Food, Agricultural and Environmental Sciences, Department of Farm Management, Miyagi University, Sendai, Japan
Toshihiro Ichijyo
Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
Hiroshi Satoh
Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
Toshinori Oikawa
Japan
Shigeru Sato
Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan