^○Ishii Kazuo¹, Kimata Makoto², Sasaki Osamu¹ (1.Institute of Livestock and Grassland Science, NARO, 2.CIMCO)

^○Terada Kei¹, Kajiwara Kazuhiro¹, Yamamoto Tiaki¹, Sibata Masatosi¹, Isii Kazuo² (1.Shizuoka Prefectural Research Institute of Animal, Swine & Poultry Research Center, 2.National Agriculture and Food Research Organization)