Up to 20% of dairy cows develop acidosis after calving. A condition known as sub-acute rumen acidosis (SARA) may also be present in larger numbers of cows. This will reduce milk fat and milk output and in some cows to cause more serious disease such as lameness, mastitis and sub-fertility which can cost hundreds of dollars per affected animal.
Many dairy cows will develop acidosis in the period after calving. This will reduce milk fat and total output and in some cases can lead to more serious diseases such as ketosis and lameness. The cost of these diseases has been estimated at up to $350 per cow.