Bovine Viral Diarrhea Welfare Impacts

Bovine viral diarrhea virus causes widespread disease and welfare problems in cattle herds worldwide, with persistently infected animals being key to transmission.

Key Facts

BVD virus causes reproductive failure, immunosuppression and gastrointestinal disease in cattle
Persistently infected (PI) cattle are born to cows infected in early pregnancy and shed virus continuously throughout their lives
PI calves have poor welfare and rarely survive to adulthood due to chronic disease susceptibility
BVD costs the EU cattle industry an estimated 700 million euros annually in production losses and treatment costs
Scandinavian countries have achieved BVD eradication through national testing and elimination programs
Vaccination can reduce clinical disease burden but does not eliminate virus in PI animals

Welfare Considerations

BVD causes multi-layered welfare problems. Acutely infected cattle experience fever, diarrhea, respiratory disease and mouth ulcers. Persistently infected animals suffer chronic immune failure, making them highly susceptible to every other disease they encounter - often living brief, miserable lives. Dams infected in early pregnancy may give birth to PI calves or suffer reproductive failure including abortion. National eradication programs that identify and remove PI animals from herds eliminate the major source of infection and dramatically improve welfare and herd health. Ireland, the UK and many EU countries have implemented BVD eradication schemes that show impressive welfare and economic gains within a few years.

What You Can Do

Support national BVD eradication schemes through advocacy and awareness
Test all cattle herds for BVD status and participate in national surveillance programs
Work with veterinarians to implement vaccination and biosecurity protocols that prevent BVD introduction
Advocate for mandatory BVD testing and PI calf identification in national livestock health policy