A bulk milk test will indicate the status of a dairy herd. A representative number of blood tests can be used to look at beef herds. However, individual blood samples are needed to identify PI cattle. Removal of PI cattle can ultimately lead to a BVDV - free herd, but farm biosecurity must be infallible. They are killed vaccines and can be used to protect heifers before they become pregnant.
Protection is short-lived and annual vaccination is required.
Moredun has been developing tests for the diagnosis of BVD for 10 years. The control of BVDV on your farm is important. Discuss it with your vet and find out more about the SAC Premium Cattle Health Scheme.