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  • Title: Immersion booster vaccination effect on sea bass (Dicentrarchus labrax L.) juveniles.
    Author: Angelidis P.
    Journal: J Anim Physiol Anim Nutr (Berl); 2006 Feb; 90(1-2):46-9. PubMed ID: 16422769.
    Abstract:
    In each challenge 30 sea bass juveniles (mean weight 3.3 +/- 0.2 g SD) were used. During the whole experiment (water T: 18 +/- 1 degrees C) the fish were held in four 50l seawater independent recirculation systems (one fish group per 50l system). The protection to the pathogen Vibrio anguillarum was tested on booster vaccinated sea bass (Dicentrarchus labrax L.) juveniles. The vaccination was performed by immersion for 60 s in a commercial anti-V. anguillarum vaccine suspension. Booster vaccination took place 60 days after the initial immunization. Thirty days after the booster vaccination all the fish received intraperitoneally (IP) 3.0 x 10(6) cfu/fish (colony forming units) virulent V. anguillarum bacteria. The booster vaccination showed a strong protection effect on the challenged sea bass. In the next 20 days after the challenge the mortality was 0% among the booster vaccinated sea bass, 10% among the once vaccinated fish and 50% in the control group (unvaccinated fish). No mortality was observed among the unvaccinated sea bass injected IP with sterile normal saline by the challenge.
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