About DEMATAWEWA C M B
About Iowa State Univ., Ames
About BERGER P J
About Iowa State Univ., Ames
About Journal of Dairy Science
About dairy cattle
About Cattle
About Other animal diseases
About 異常分娩
About 収量
About 生殖能力
About 牛
About 損失
About ホルスタイン種
About スコア
About 経済的評価