摘要乳房炎（mastitis）是乳腺腺泡或间质炎症的总称，是奶牛场最常见、防治最困难、花费成本最高的一种疾病。乳房炎不仅影响产奶量，造成相当大的经济损失，且影响乳汁质量，间接危害人体健康。据美国国家乳房炎委员会（Nationalmast it is Council，NMC）1996年统计，每年因隐性乳房炎（Subciinic Mastitis，SCM），
9Lund T F,Miglior J c Mdekkers, E B Burnside. Genetic relationships between clinical mastitis somatic cell count,and udder conformation in Danish Holstein[J]. Livest Pord Sci, 1994,39,243-251.
10Ruben N G,David J W,Sharon A S,et al. Outbreaks of clinical mastitis caused by Trichosporon beigelii in dairy herds [J]. J Am Vet Med Assoc, 2001,218 (2) : 238-242.
