The effect of dietary Echinacea purpurea (EP) on the response of zebrafish (Danio rerio) to a Flavobacterium columnare vaccine was investigated. Two hundred D. rerio with an average weight of 290 ± 40 g were selected and fed different levels of E. purpurea (5 g kg-1 diet - group 1, 10 g kg-1 diet - group 2, 20 g kg-1 diet - group 3, 30 g kg-1 diet - group 4, and 0 g kg-1 diet - group 5). Experimental feeding was begun 3 weeks prior to bath immunization and continued until the end of the experiment. Twenty-eight days after immunization the fish were challenged by bath immersion with F. columnare at a concentration of 1x106 CFU/ml. The relative percent survival of the experimental groups (1, 2, 3, 4 and 5) was 5.0, 6.0, 30.0, 36.0 and 5.0, respectively. In conclusion, diet supplementation with E. purpurea may effectively enhance the response of zebrafish to a F. columnare vaccine.
CITATION STYLE
Guz, L., Puk, K., Walczak, N., Oniszczuk, T., & Oniszczuk, A. (2014). Effect of dietary supplementation with Echinacea purpurea on vaccine efficacy against infection with Flavobacterium columnare in zebrafish (Danio rerio). Polish Journal of Veterinary Sciences, 17(4), 583–586. https://doi.org/10.2478/pjvs-2014-0087
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