^○Yoshidomi Tsukasa¹, Hirose Kensuke², Kuge Takeshi³, Kurosawa Yaetu⁴, Takizawa Tatuya¹, Tanaka Kazuaki¹ (1.Graduate School of Veterinary Medicine Azabu ,Univ., 2.Central Research Institute for Feed and Livestock, ZEN-NOH, 3.ZEN-NOH LIVESTOCK CO.,LTD, 4.Tokyo Univ. of Agriculture)

^○Hara Hitomi¹, Ogawa Shinichiro², Ohnishi Chika³, Ishii Kazuo⁴, Uemoto Yoshinobu², Satoh Masahiro² (1.Faculty of Agriculture, Tohoku Univ., 2.Graduate School of Agricultural Science, Tohoku Univ., 3.National Livestock Breeding Center Miyazaki Station, 4.Division of Animal Breeding and Reproduction, Institute of Livestock and Grassland Science, NARO)