Prevalence and antibiotic resistance of mastitis pathogens isolated from dairy herds transitioning to organic management

• Published in: Journal of veterinary science (Suwŏn-si, Korea) Vol. 13; no. 1; pp. 103 - 105
• Main Authors: Park, Y.K., Seoul National University, Seoul, Republic of Korea, Fox, Lawrence K., Washington State University, Pullman, WA, USA, Hancock, Dale D., Washington State University, Pullman, WA, USA, McMahan, Wade, Washington State University, Pullman, WA, USA, Park, Y.H., Seoul National University, Seoul, Republic of Korea
• Format: Journal Article
• Language: English
• Published: Korea (South) 대한수의학회 01.03.2012; The Korean Society of Veterinary Science
• Subjects: Ampicillin - pharmacology; Animals; Anti-Bacterial Agents - pharmacology; antibiotic resistance; Cattle; Cephalothin - pharmacology; Cloxacillin - pharmacology; DAIRIES; Drug Resistance, Microbial; Female; Lactation; mastitis pathogens; Mastitis, Bovine - microbiology; Microbial Sensitivity Tests; Organic Agriculture; organic dairy; Penicillins - pharmacology; PLANTAS LECHERAS; Prevalence; Short Communication; Staphylococcal Infections - microbiology; Staphylococcal Infections - veterinary; Staphylococcus - drug effects; Staphylococcus - isolation & purification; USINE LAITIERE; 수의학; antibiotic resistance; mastitis pathogens; organic dairy
• ISSN: 1229-845X; 1976-555X
• DOI: 10.4142/jvs.2012.13.1.103

Changes in udder health and antibiotic resistance of mastitis pathogens isolated from dairies upon conversion from conventional to organic management over a 3-year period was studied. Coagulase-negative staphylococci (CNS) were the most prevalent mastitis pathogens isolated. CNS were significantly less resistant to β-lactam antibiotics when isolated from milk after the herd transitioned to organic management. Cessation of the use of antimicrobial therapies in dairies in combination with organic management could lead to a reduction in the antimicrobial resistance of mastitis pathogens.