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Fish Shellfish Immunol ; 94: 746-751, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31546040

RESUMO

The present study evaluated the biofilm (BF) of Vibrio anguillarum for oral vaccination of Asian seabass, Lates calcarifer. An 80-day experiment was carried out in circular fiber-reinforced plastic (FRP) tanks using free cell (FC) and BF of Vibrio anguillarum with triplicate in each. Heat-inactivated FC and BF cells at 107, 1010 and 1013 CFU/g fish/d were fed to fish for 20 days, agglutination antibody titer estimated at each 10 days interval up to 60-day post vaccination. As compared to FC and control there was a significant increase in agglutinating antibody titer in the biofilm vaccinated fishes. Among the 3 doses, BF at 1010 cfu/g fish/d was considered the ideal dose for vaccination. Relative percentage survival (RPS) was higher in biofilm vaccinated fish (85.4%) compared to that with free cells (27.0%). The study demonstrated the better performance of V. anguillarum biofilm oral vaccine compared that with free cell vaccine in L. calcarifer. The study further supports better performance of biofilm vaccine model with one more bacterial pathogen in a high carnivore fish.


Assuntos
Vacinas Bacterianas/farmacologia , Bass , Biofilmes , Doenças dos Peixes/prevenção & controle , Vacinação/veterinária , Vibrioses/veterinária , Vibrio/fisiologia , Administração Oral , Animais , Vacinas Bacterianas/administração & dosagem , Temperatura Alta , Vacinas de Produtos Inativados/administração & dosagem , Vacinas de Produtos Inativados/farmacologia , Vibrio/imunologia , Vibrioses/prevenção & controle
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