Mastitis is caused by• Physical Injury• Chemical Damage• Bacterial Infection (most common by far)There are two types of Mastitis:• Clinical mastitis• Sub-clinical mastitisA cow with sub-clinical mastitis will not show signs of disease from the udder. What they are not aware of is the possibility that more cows in the herd could be having sub-clinical mastitis. Most sub-clinical mastitis cases that are not treated end up being clinical mastitis. Sub-clinical mastitis is not visible so a California Mastitis Test(CMT) is used for detection on-farm, providing an immediate result and can be used by farmers. Segregate chronic mastitis cows, milk them last, cull when necessary.

Source: Daily Nation May 02, 2018 09:11 UTC