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KMID : 0893420120130010103
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Journal of Veterinary Science
2012 Volume.13 No. 1 p.103 ~ p.105
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Prevalence and antibiotic resistance of mastitis pathogens isolated from dairy herds transitioning to organic management
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Park Young-Kyung
Fox Lawrence K.
Hancock Dale D.
McMahan Wade
Park Yong-Ho
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Abstract
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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.
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KEYWORD
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antibiotic resistance, mastitis pathogens, organic dairy
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