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Antibiotic resistance in Staphylococcus aureus and coagulase negative Staphylococci isolated from goats with subclinical mastitis

Virdis, Salvatore and Scarano, Christian and Cossu, Francesca and Spanu, Vincenzo and Spanu, Carlo and De Santis, Enrico Pietro Luigi (2010) Antibiotic resistance in Staphylococcus aureus and coagulase negative Staphylococci isolated from goats with subclinical mastitis. Veterinary Medicine International, Vol. 2010 , p. 1-6. eISSN 2042-0048. Article.

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DOI: 10.4061/2010/517060

Abstract

Antimicrobial resistance patterns and gene coding for methicillin resistance (mecA) were determined in 25 S. aureus and 75 Coagulase Negative Staphylococci (CNS) strains isolates from half-udder milk samples collected from goats with subclinical mastitis. Fourteen (56.0%) S. aureus and thirty-one (41.3%) CNS isolates were resistant to one or more antimicrobial agents. S. aureus showed the highest resistance rate against kanamycin (28.0%), oxytetracycline (16.0%), and ampicillin (12.0%). The CNS tested were more frequently resistant to ampicillin (36.0%) and kanamycin (6.7%). Multiple antimicrobial resistance was observed in eight isolates, and one Staphylococcus epidermidis was found to be resistant to six antibiotics. The mecA gene was not found in any of the tested isolates. Single resistance against β-lactamics or aminoglicosides is the most common trait observed while multiresistance is less frequent.

Item Type:Article
ID Code:7288
Status:Published
Refereed:Yes
Uncontrolled Keywords:Antibiotic resistance, goats milk, subclinical mastitis, Staphylococcus aureus
Subjects:Area 07 - Scienze agrarie e veterinarie > VET/04 Ispezione degli alimenti di origine animale
Divisions:001 Università di Sassari > 01 Dipartimenti > Biologia animale
Publisher:SAGE - Hindawi Publishing Corporation
eISSN:2042-0048
Copyright Holders:© 2010 Salvatore Virdis et al.
Deposited On:23 Mar 2012 12:30

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