Bacteriological Survey of Mammary Secretions from Prepartum Heifers in a Dairy Herd with a High Prevalence of Staphylococcus aureus Infection

Journal of Veterinary Medical Science

Hajime NAGAHATA³  Takeshi OKUHIRA¹  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: prepartum heifer;    intramammary infection;    Staphylococcus aureus;   

DOI  :  10.1292/jvms.68.1359

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(18)This study was performed to examine the bacteriological findings in 58 mammary secretions from 15 heifers at 4-5 weeks before parturition, and to evaluate whether a high prevalence of S. aureus infection in lactating cows affects the occurrence of S. aureus infection in prepartum heifers in the dairy herd. A total of 86.7%(13/15) of the heifers and 60.3%(35/58) of quarter milk samples from the heifers were bacteriologically positive. No S. aureus isolate was detected in mammary secretions from the heifers. Coagulase-negative staphylococcus (CNS) species were predominantly detected in 54.3%(19/35) and Streptococci other than Streptococcus agalactiae were isolated from 22.9%(8/35) of the quarters. A high S. aureus prevalence in the herd may not necessarily be a decisive factor for S. aureus infection in heifers.

【 授权许可】

Unknown