Relations Between Milk Urea Levels and Conception in Lactating Dairy Cows
牛乳の尿素濃度と乳牛の受胎成績の関係

Hiroshi SATO, Yasuhiko NISHIGUCHI, Toshitsugu KATO
1996 Nihon Chikusan Gakkaiho  
doi:10.2508/chikusan.67.58 fatcat:krnjxew52zh6hinez3d45krjtm