BRSV vaccination critical

 Resize text         Printer-friendly version of this article Printer-friendly version of this article

Canadian research conducted by John Ellis, veterinarian at the Western College of Veterinary Medicine in Saskatchewan, shows a significant reduction in clinical signs of bovine respiratory syncytial virus (BRSV) in young calves vaccinated against the disease.

In the study of 17 colostrum-fed calves, eight were vaccinated with a killed virus vaccine at nine weeks of age, followed by a second shot three weeks later. At 15 weeks of age, all calves were challenged with a virulent disease-causing strain of BRSV.

"Results from the study reveal vaccinated calves had a significant reduction in clinical signs and lung lesions compared to the non-vaccinated calves," says Myron Brown, veterinarian and manager of large animal veterinary professional services for Merial. Additionally, six of the nine non-vaccinated calves died during the trial, while none of the vaccinated animals did. Necropsies of all the calves found that 51 percent of the lung tissue in the non-vaccinated calves contained pneumonic tissues, with vaccinated calves having just 2.28 percent pneumonic tissue.

This study suggests that vaccinating calves for BRSV with a commercially-available killed BRSV vaccine is an important tool in fighting respiratory problems.



Comments (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


Biotal Forage Inoculants

"Biotal offers a range of forage inoculants proven to help win the battle to preserve feed quality and value. Call ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Leads to Insight