Field trial to evaluate the effect of an intranasal respiratory vaccine protocol on bovine respiratory disease incidence and growth in a commercial calf rearing unit

BMC Veterinary Research
Atte SandelinHeli Simojoki

Abstract

Bovine respiratory disease (BRD) continues to be great challenge in calf rearing units. The urgent need to decrease the use of antibiotics and increase animal welfare in beef production has forced us to introduce new preventive methods. Vaccinations could contribute to the solution, but the high incidence of BRD already at an early age has made it difficult to introduce suitable vaccination programs. Challenge studies have shown promising results in 3-14 day old calves vaccinated with intranasal BRD vaccine, but very few field trials are available to assess the efficacy of the intranasal vaccines in field conditions. We evaluated the effect of one dose of commercial intranasal vaccination on calf mortality, daily gain, and treatment incidence for BRD in one calf rearing unit. In total, 497 calves (mean age 19 days) were included in our study, 247 of which were vaccinated at the time of arrival to the unit and 250 served as negative controls (unvaccinated). Vaccinated and unvaccinated calves were situated in separate compartments until weaning. Daily gain, treatment incidence, and mortality were recorded until the calves were transported to the finishing unit, which averaged 154.5 days from arrival. Average daily gain over the c...Continue Reading

References

Jan 25, 2005·Acta Veterinaria Scandinavica·H HärtelH Saloniemi
Jan 30, 2007·Comparative Immunology, Microbiology and Infectious Diseases·S NikunenT Soveri
Apr 6, 2007·The Veterinary Journal·A Ortiz-PelaezJ J Mawdsley
Mar 15, 2012·BMC Veterinary Research·Bart PardonPiet Deprez
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Nov 26, 2013·Preventive Veterinary Medicine·M C WindeyerS J LeBlanc
Oct 11, 2016·Journal of Dairy Science·Charlotte B WinderTodd F Duffield

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