Abstract

ROSETE FERNANDEZ, Jorge Víctor et al. Production of serum antibodies in response to vaccination against infectious bovine rhinotracheitis and bovine viral diarrhea viruses with a commercial vaccine. Rev. mex. de cienc. pecuarias [online]. 2023, vol.14, n.2, pp.260-276.  Epub June 26, 2023. ISSN 2448-6698.  https://doi.org/10.22319/rmcp.v14i2.5657.

The objective was to determine the prevalence of serum antibodies (PSA) in response to vaccination against infectious bovine rhinotracheitis (IBR) and bovine viral diarrhea (BVD) viruses in dairy cows under subtropical conditions. A commercial polyvalent vaccine with inactivated BVD virus and modified active viruses of IBR, parainfluenza 3 and bovine respiratory syndrome was used. Two groups were formed: vaccinated (VEG) and unvaccinated (UEG) experimental group, which were homogeneous in PSA against IBR and BVD before vaccination. VEG was immunized on d 0 and d 30 after the first vaccination (booster vaccine). To detect antibodies, serum samples were collected 30 d after the first and second vaccinations. Serum antibodies against IBR and BVD were determined by the ELISA test. The average PSA against IBR and BVD before vaccination was 16 (18 % in VEG vs 14 % in UEG; P>0.05) and 8 % (10 % in VEG vs 6 % in UEG; P>0.05), respectively. The first and second vaccinations against IBR induced the formation of antibodies 30 d after their application; with the first vaccination, PSA in vaccinated cows was 36 percentage units higher (P<0.05) than in unvaccinated cows (58 vs 22 %) and with the booster vaccine, PSA in vaccinated cows was 66 percentage units higher (P<0.05) than in unvaccinated cows (94 vs 28 %). The commercial vaccine did not induce the production of antibodies against BVD with either immunization.

Keywords : Infectious bovine rhinotracheitis; Bovine viral diarrhea; Polyvalent vaccine; Modified active virus; Inactivated virus; Serum antibodies; Dairy cows.

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