奶牛临床型乳房炎病原菌的分离与鉴定

奶牛乳房炎是奶牛常见病和多发病之一，其病因复杂，难以防制，给奶牛饲养业带来了巨大的经济损失。作者通过对某奶牛场的奶牛临床型乳房炎病原菌进行分离、鉴定，从105份样品中共分离出76株细菌，经培养特性、染色镜检、生化鉴定等试验，鉴定出无乳链球菌58株，占分离菌的76.32%；大肠杆菌18株，占分离菌的23.68%。本试验结果表明，无乳链球菌是奶牛临床型乳房炎的主要病原菌，其次是大肠杆菌。这为奶牛乳房炎的防制提供了重要依据。

Isolation and Identification of Bovine Clinical Mastitis Pathogenic Bacteria

Dairy mastitis happens frequently in cattle farm. Because of the complicated cause and no effective therapy, it has brought the cattle farms large economic loss. A series of experiments were designed to discover the reason why the disease happen in the cattle farm.76 bacterium were isolated from 105 samples of dairy mastitis, including 58 of streptococcus agalactiae(76.32%), 18 of escherichia coli(23.68%). The result demonstrates that Streptococcus agalactiae is main bacterium causing bovine clinical mastitis, the next is escherichia coli. It is important for the prevention and cure of bovine clinical mastitis.