Bovine Viral Diarrhoea (BVD)

Bovine viral diarrhoea is the most prevalent infectious disease of cattle worldwide. To find out more about the disease itself click here. In New Zealand cattle farmers lose more than $150 million per year through the negative effects of BVD these include:

Negative effects of BVDV include:

  • Poor milk production

  • Increased somatic cell count (shown to continue for up to one year after transient infection)

  • Increased instance of mastitis (has been shown to increase mastitis by 10%)

  • Increased susceptibility to illness due to immunosuppressive nature of disease (For example BVD has been indicated as a major contributor to instances of BRD) 

  • Increased abortions/stillborns

  • Increased congenital defects

  • Increased calf deaths

  • Reduced fertility in heifers

  • Temporarily sterilised bulls

  • Decreased animal welfare

BVD infection during pregnancy can result in the production of a persistently infected (PI) foetus. Whilst many farmers recognize the cost of culling a persistently infected (PI) calf the greatest economic cost of BVD is the impact on herd performance. Click here to find out more about persistently infected calves and how they are created.