Bovine virus diarrhea (BVD) is a contagious cattle disease that can potentially cause serious complications if not treated or prevented properly. BVD is a highly contagious infection with wide-ranging implications, both in terms of cows’ welfare and economy. Understanding what the disease is and how it can be prevented is key to maintaining a healthy and productive livestock population.

What are the Symptoms of BVD?

As a viral infection, early signs vary from cow to cow, but some of the general symptoms may include low-grade fever, loss of appetite, increased mucus production, and general listlessness. In cases of severe infection, diarrhea and serious breathing problems may occur. Crows with BVD may not show any symptoms, but still spread the virus to other animals.

What Causes BVD?

BVD is caused by the BVD virus, an RNA virus belonging to the Pestivirus genus. It is transmitted through contact with infected cows, via air, or exposure to contaminated environments. The virus can be spread through nasal secretions, saliva, and through placenta if an infected cow gets pregnant and passes on the virus to her unborn calf.

Is BVD Serious?

Yes, bovine virus diarrhea is a serious cattle disease that can have serious economic and health implications if not properly managed. The infection can spread easily and can become endemic, meaning it is constantly present in a herd, resulting in persistent losses from calves suffering from birth defects, abortion, or pre-weaning mortality.

Bovine virus diarrhea is a serious cattle disease that can have serious economic and health implications if not properly managed.

In the case of persistent infections, BVD can also cause immunosuppression, leaving animals more susceptible to other infections such as BRSV and Transmisable Gastroenteritis (TGE), both of which can cause severe diarrhea and dehydration, even up to two weeks after the initial BVD virus is cleared.

Is BVD Vision Curable?

BVD is not a curable disease, but it is preventable through various means, including vaccination and careful biosecurity measures. Vaccination is seen as the best option for protecting cattle from the BVD virus, as it reduces the spread of the virus and its complications. Vaccination should be done early in life, as the virus can spread amongst the herd quickly and be passed from mother to calf.

In addition to vaccination, farmers should practice good biosecurity on farms, with measures such as quarantining animals, minimizing contact with other herds, and vaccinating any new animals. All livestock should also have regular veterinary health checks, as this can help to identify any sick animals, and any problems can be addressed quickly.

Overall, bovine virus diarrhea is a contagious and serious cattle disease, which has substantial economic implications. It is important to understand BVD and take preventive measures to protect your cattle and keep them healthy. Vaccination is seen as the most effective way to protect against the virus, and biosecurity measures can help reduce the spread of the virus.

References

[1] Hampson, D.J., and K.J. De Decker. “Survey of Bovine Virus Diarrhoea (BVD) Disease and Control in Europe.” Veterinary Journal, vol. 201, no. 2, 2014, pp. 188–190., doi:10.1016/j.tvjl.2014.03.011.

[2] Breard, Emilie, et al. “Bovine Viral Diarrhea: Epidemiology, Diagnosis, Control, and Impact on Reproduction.” Animals, vol. 8, no. 7, 2018, p. 128., doi:10.3390/ani8070128.