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Control of udder health is an essential element in the process of safe milk  production. Thus through the mastitis control program dairy farms regularly  conduct measures of detection and prevention of udder diseases. Subclinical  mastitis is an important disease of dairy cows causing economic losses and  physical and chemical changes in milk. The aim of this research was to  evaluate the usefulness of the California and the Draminski mastitis test to  detect the subclinical mastitis in dairy cows. The efficacy of indirect  mastitis tests for diagnosis of the subclinical mastitis was determined by  comparing results of mastitis tests with bacteriological findings. The  experiment was conducted on two dairy farms (farm A and farm B) Holstein -  Friesian breed. A total of 245 quarter milk samples were examined, 95 quarter  milk samples with the California mastitis test from farm A and 150 quarter  milk samples with the Draminski mastitis test from farm B. A quarter milk  samples for bacteriological analysis were taken aseptically during the  morning milking in sterile test tubes. On farm A, bacteria growth has not  been detected in 46.32% (44/95) quarter milk samples, while on farm B  negative bacteriological findings have been found in 50.67% samples (76/150).  In present study, sensitivity of the California mastitis test (78.57%) is  higher than sensitivity of the Draminski mastitis test (74.32%). The  specificity of the California mastitis test and the Draminski mastitis test  is 82.05% and 30.26%, respectively. Efficacy of the California mastitis test  in detection of the subclinical mastitis in dairy cows is better than that of  the Draminski mastitis test, since accuracy of the California mastitis test  has been higher. [Project of the Serbian Ministry of Education, Science and  Technological Development, Grant no. TR 31034]

Detection of subclinical mastitis in dairy cows using California and Draminski mastitis test