Controlling Highly Prevalent Staphylococcus aureus Mastitis from the Dairy Farm

Journal of Veterinary Medical Science

Hiroyasu ITO³  Hajime NAGAHATA³  Takeshi OKUHIRA¹  Hiromi SUSUKINO³  Susumu MATSUKI³  Yuzo NISHIKAWA³  Hidetoshi HIGUCHI³  Hiroshi MARUTA³  Akira ANRI² 

[1] Rakuno Gakuen University Farm;Large Animal Clinic and Research Center;Department of Animal Health, School of Veterinary Medicine, Rakuno Gakuen University

关键词: dairy herd;    long-term monitoring;    mastitis control program;    preventive medicine;    Staphylococcus aureus;   

DOI  :  10.1292/jvms.69.893

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(24)Cited-By(3)In 57 Holstein cows where the dairy farm uses a milking parlor system, the somatic cell count (SCC) increased persistently in the bulk milk (monthly mean 52.3 × 104 cells/ml; range 21 to 94 × 104 cells/ml). We detected S. aureus in 24 (41.2%) of the 54 lactating cows and in 29 (12.8%) of 227 quarters of the 57 milking cows in the herd. A control program was implemented in an effort to eradicate S. aureus mastitis from this dairy farm. The control plan established improved handling of the lactating cows, improved milking procedures, dry-cow therapy, and culling of infected cows. The program was monitored for 3.5 years by frequent checkups on the rate of S. aureus infection, the SCC, and the changes in milk composition. Eighteen months after the control program was started, the rate of S. aureus infection in the quarter milk decreased dramatically, and no S. aureus isolates were found in the milk of the remaining cows. The SCC in the bulk milk of the herd dropped to a monthly mean of <20 × 104 cells/ml. In conclusion, the control program was effective for controlling persistent S. aureus mastitis in this dairy herd.

【 授权许可】

Unknown