Resumo

PRESENTADO, G. et al. Niveles de anticuerpos vacunales contra enfermedad de Gumboro en pollitos parrilleros a los 21 y 28 días post-nacimiento. Rev. vet. [online]. 2018, vol.29, n.2, pp.119-122. ISSN 1669-6840.  http://dx.doi.org/10.30972/vet.2923276.

The infectious bursal disease virus is the etiological agent of the acute and highly contagious infectious bursal disease (IBD) or "Gumboro disease". IBD is one of the most important diseases that affect poultry farming worldwide. The aim of this study was to determine the levels of antibodies after vaccination against IBD in broilers with recombinant vaccine in ovo at 18 days. From a total of 200 birds, 28 animals were randomly sampled. Blood was collected by cardiac puncture at 1, 7 and 14 days-old and by vein puncture at 21, 28 and 35 days-old. Samples were analyzed by means of enzyme-linked immunosorbent assay (ELISA) indirect method, using a commercial kit (Idexx Lab). Results showed that the average antibody levels/titles were: 6955, 3678, 808, 34, 8, and 3013, for days 1, 7, 14, 21, 28 and 35 days, respectively. No statistically significant differences (p>0,05) in the levels of antibodies between 21 and 28 days were observed, thus considering immune proteins as non-protective.

Palavras-chave : broilers; Gumboro disease; recombinant vaccine; antibodies after vaccination.

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