Cases of subclinical mastitis in dairy cow at Balai Besar Pembibitan Ternak Unggul dan Hijauan Pakan Ternak Baturraden, Jawa Tengah, Indonesia

Subclinical mastitis is a disease that often occurs in lactating dairy cows and has the potential to reduce production, causing economic losses for farmers. Common subclinical mastitis is caused by the bacteria Staphylococcus aureus, Streptococcus agalactiae, and Escherichia coli. This paper aims to report clinical signs, methods of diagnosis, and treatment of subclinical mastitis in a dairy cow at the Balai Besar Pembibitan Ternak Unggul dan Hijauan Pakan Ternak, Baturraden. Subclinical mastitis in this case was diagnosed by examination using the California Mastitis Test (CMT). On clinical examination, the cow appeared normal without any signs of inflammation in the udder, while based on examination with CMT, the cow was declared positive for subclinical mastitis with CMT +++ (moderate) in the front left udder, and CMT ++ (mild) in the rear left udder. In this case, the cow was treated with the antibiotic Terrexine LC., which contains the active substances in the form of Cefalexin (200 mg) and Kanamycin monosulphate (100,000 I.U), intramamarily, 3 times every 12 hours (post-milking). Teat dipping using 1% Povidone iodine and separating the cage from healthy cows was also carried out to prevent the spread of disease. On the 7th post-treatment day, the CMT score in the cow's udder decreased and was declared as a mild infection.