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1·Bovine mastitis not only caused severe economic loss in dairy herds, but also brought serious and potential damage for humans healthy because antibiotics was widely used during therapy.

奶牛乳腺炎至今不仅对奶牛业造成严重的经济损失，而且由于治疗过程中抗生素的广泛应用，给人类的健康带来严重的、现实的和潜在的危害。

2·Mastitis is a common and frequently-occurring disease in the bovine, it is caused by pathogenic microorganisms.

乳腺炎是奶牛的一种常见病和多发病，其发生的主要原因是病原微生物感染。