Prevalence of Methicillin Resistance and Panton-Valentine Leukocidin Genes in Staphylococci Isolated from Pirlak Sheep with Subclinical Mastitis in Turkey

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This study aimed to investigate the presence of mecA and pvl genes in 47 Staphylococci previously isolated from 464 half-udder milk samples belong to 235 Pirlak sheep screening for subclinical mastitis. The species from Pirlak sheep used in the present study included: 13 S. aureus , 13 S. epidermidis , six S. xylosus , five S. chromogenes , three S. simulans , three S. hyicus , two S. warneri , one S. lentus and one S. saprophyticus . A total of 10 strains (21.3%) were determined to harbour mecA gene, of these, two (4.2%) also contained pvl gene. The strains carrying mecA gene were found to be S. aureus (3/13), S. xylosus (3/6), S. epidermidis (2/13), S. lentus (1/1) and S. hyicus (1/3). The presence of pvl gene was determined in a total of eight strains (17.0%), six (12.8%) of these were alone. Of pvl positive strains, three, three, one, and one were S. aureus , S. xylosus , S. simulans and S. hyicus , respectively. To our knowledge, this is the first study showing the presence of mecA and pvl genes in the Staphylococci isolated from Pirlak sheep with subclinical mastitis in Turkey.