HomePhilippine Journal of Veterinary and Animal Sciencesvol. 37 no. 2 (2011)

Ultrasound Features and Echo Mean Values of Udder and Teat in Dairy Cows with Mastitis

Toofan Javadi | Jezie A. Acorda, Dvm, Magr, Phd

Discipline: Veterinary Medicine, Animal Science



This study was conducted to determine the ultrasound features and echo mean values obtained through histogram analysis of ultrasonograms of udder and teat in twenty three (23) Holstein-Friesian x Sahiwal crossbreed cows, 3-8 years old, with different grades of mastitis as determined using California mastitis test (CMT). Based on the results of the CMT, the 23 cows were classified into three groups: a) no mastitis (negative CMT, 4 cows); b) subclinical mastitis (trace CMT, 8 cows); and c) clinical mastitis (1-3 CMT, 11 cows). Ultrasonography of the teats and udders showed that the sinus and cistern of cows with mastitis (CMT grades 2 and 3) were more echogenic than those without mastitis. Histogram analysis of the teat and udder ultrasonograms showed significantly higher echo mean values in cows with grades 2 and 3 in CMT than in other groups. The results suggest that diagnostic ultrasound can be utilized for diagnosis of clinical mastitis in dairy cows.