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Colégio Brasileiro de Patologia Animal - CBPA, Pesquisa Veterinária Brasileira, 3(33), p. 326-330, 2013

DOI: 10.1590/s0100-736x2013000300009

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Efficacy of bacterin-, outer membrane protein- and fimbriae extract-based vaccines for the control of Salmonella Enteritidis experimental infection in chickens

Journal article published in 2013 by Menão,Márcia C., Astolfi-Ferreira,Claudete S., Ferreira,Antonio J. Piantino, Antonio J. Piantino Ferreira, Márcia C. Menão, Claudete S. Astolfi Ferreira, Terezinha Knöbl, Knöbl,Terezinha, Antonio J. Piantino Ferreira ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The efficacy of three vaccines was evaluated in chickens for the control of experimental infection with Salmonella Enteritidis (SE) phage type 4. The vaccines were produced with bacterin, outer membrane proteins (OMP) and fimbriae crude extract (FE). The chickens were vaccinated intramuscularly with two doses of each vaccine at 12 and 15 weeks of age. The chickens were then orally challenged with 10(9) CFU/chicken Salmonella Enteritidis phage type 4 at 18 weeks of age. Fecal swabs were performed for the recovery of shedding SE, and SE was recovered from the liver and spleen. Additionally, antibody titers were measured in the serum by micro-agglutination test. The results indicated that the vaccine produced with bacterin yielded better results and resulted in reduction of fecal shedding and organ invasion by SE after oral challenge, although no vaccine was 100% effective for the control of SE experimental infection.