Tamilarasan, D.Arunaman, C.S.Chandrasekaran, D.TANUVAS2017-12-282017-12-282017-08http://krishikosh.egranth.ac.in/handle/1/5810038274TNV_CCA_Y2017_3-4Aug.Pg177A six year old recently calved Jersey cross bred cow was presented at large animal medicine outpatient unit of Teaching Veterinary Clinical Complex in Madras Veterinary College, with a history of sudden drop in milk yield. On physical examination, all vital sign parameters were within the normal range. No visible abnormality was noticed on macroscopic examination of milk. Blood profile revealed normal haematology and serum biochemistry. Milk samples from individual quarters were screened for subclinical mastitis with a combination of California mastitis test, clot on boiling test, white side test, and pH. The animal’s right fore quarter and left hind quarter showed positivity to all the four tests (California mastitis test, clot on boiling test, white side test, and pH). The milk sample was sent for bacteriological examination. The result revealed the presence of E.coli. Antibiogram revealed higher sensitivity to Gentamicin. The animal was treated with Gentamicin at 4mg/kg body weight, Vitamin AD3E and intramammary infusion of cefoperazone for five consecutive days. After five days, milk samples were screened and confirmed for absence of mastitis. Milk production was regained almost to normal. The patient recovered uneventfully.enVeterinary Science - Conference AbstractOther