The most frequent SE genes among the S. aureus isolates were sec and seb, while all isolates tested negative for see. Similar studies have also reported a high prevalence of the sec and seb genes among S. aureus isolated from small ruminants and bovines with mastitis [8,15], while the absence of the enterotoxin gene see in our isolates is in accordance with previous results [10]. This evidence concerns the gene SETBP1 and mastitis.