Surveillance data indicate that more than 70 percent of U.S. dairy cows have been exposed to the BVD virus. Thus, its presence is real, and is a threat to the long-term success of dairy herds.
Left unchecked, BVD can be the cause of:
- Poor reproductive efficiency
- Loss of milk production
- Impaired growth and unthriftiness of young stock
The Dairy Cattle Reproduction Council advises a comprehensive BVD control program that includes:
- Diagnostic testing for BVDV to confirm clinical cases and identify persistently infected (PI) animals.
- Vaccination; and
- Biosecurity measures
DCRC cautions that pursuing one vein of this control program without the others will result in substandard control.