Abstract
A cross section study was carried out on a total of 153 lactating cows for sub clinical mastitis by using California Mstitis Test (CMT). Of all animal tested 137 (89.54 %) were found positive for mastitis. From 137 CMT positive animals, 122 were bacteriologically positive. The prevalence of sub clinical mastitis 89.54 % in cow and 63.1 % quarters were recorded and the resulting quarter infection rate was 56.70 %. Bacteria belonging to Staphylococcus genera were isolated with Staphylococcus epidermedius (38.41 %), Staphylococcus intermedius (23.19 %) and Staphylococcus aureus (13 %) dominating the milk flora. The high prevalence of sub clinical mastitis found in cow in the study was required further studies to identify risk factors and antibiotic sensitivity tests for the isolates as this would help to devise treatment and control of sub clinical mastitis in dairy cows in the area.
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