High Prevalence of Subclinical and Clinical Mastitis Caused by Environmental and Minor Pathogens in a Large Dairy Herd in Iran

Authors

  • M. Bolourchi Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, IRAN
  • R. Kasravi Tehran, IRAN
  • P. Hovareshti Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, IRAN
  • N. Farzaneh School of Veterinary Medicine, Ferdowsi University of Mashhad, IRAN

DOI:

https://doi.org/10.21423/aabppro20035336

Keywords:

contagious pathogens, teat disinfection, dry cow therapy, Herd management, control measures, clinical mastitis

Abstract

Environmental and minor pathogens seem to be of increasing significance, especially in situations where major contagious pathogens (Streptococcus agalactiae and Staphylococcus aureus) have been controlled using post-milking teat disinfection and dry cow therapy. Herd management practices that successfully control contagious pathogens fail to control coliforms and many streptococcal bacteria. Coagulase-negative staphylococci (CNS) are the most prevalent bacteria isolated in herds using currently recommended control measures and Corynebacterium bovis ( C. bovis) was identified as the cause of up to 20% of all cases of clinical mastitis in some herds.

Author Biographies

M. Bolourchi, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, IRAN

Associate Professor

P. Hovareshti, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, IRAN

Associate Professor

N. Farzaneh, School of Veterinary Medicine, Ferdowsi University of Mashhad, IRAN

Assistant Professor

Cover image of the 36th Conference Proceedings: Holstein cows standing in a row at a fence. One cow has put her head through the fence and is curiously inspecting a pile of hay. Yellow background.

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Published

2003-09-18

Issue

2003

Section

Posters

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