Exploring indicators of genetic selection using the sniffer method to reduce methane emissions from Holstein cows oleh Yoshinobu Uemoto, Tomohisa Tomaru, Masahiro Masuda, Kota Uchisawa, Kenji Hashiba, Yuki Nishikawa, Kohei Suzuki, Takatoshi Kojima, Tomoyuki Suzuki, Fuminori Terada