Occurrence of subclinical mastitis in dairy does in Duhok, Iraq

California mastitis tests (CMT) and white side test (WST) were used to determine the occurrence rate of subclinical mastitis in dairy does in Duhok province of Iraq. The rate of subclinical mastitis was 40.5% and 37.5% by CMT and WST respectively. The Staphylococcus aureus was the most prevalent isolate with 72.38% followed by Klebsiella spp. (29.79%) and Escherichia coli (27.65%). This is the first report on subclinical mastitis report in Duhok area of Iraq.