Immersion and injection vaccination of salmonids against furunculosis with an avirulent strain of Aeromonas salmonicida

R. C. Cipriano; C. E. Starliper

doi:10.1577/1548-8659(1982)44[167:iaivos]2.0.co;2

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Immersion and injection vaccination of salmonids against furunculosis with an avirulent strain of Aeromonas salmonicida

R. C. Cipriano·C. E. Starliper

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Abstract

Replicate groups of brook trout (Salvelinus fontinalis) immunized by intraperitoneal injection of graded dilutions of an avirulent strain of Aeromonas salmonicida were protected from a virulent challenge. Mean mortality after challenge was 88% in control trout, 66% in trout immunized with 3 × 10 6 or 3 × 10 5 cells, and 39% in trout immunized with 3 × 10 4 to 3 × 10¹ cells. In brook trout challenged after immersion for 60 s in a culture containing 2.3 × 10 9 avirulent cells of A. salmonicida per milliliter, mortality was 44%, compared with 94% in controls. In Atlantic salmon (Salmo salar), similarly vaccinated by immersion, mortality was 12.5% after challenge compared with 87.5% in controls. In additional studies, mean mortality of Atlantic salmon vaccinated by immersion was 14%, whereas that of control salmon was 92%.

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R. C. Cipriano, C. E. Starliper. 1982. Immersion and injection vaccination of salmonids against furunculosis with an avirulent strain of Aeromonas salmonicida. https://doi.org/10.1577/1548-8659(1982)44%5B167%3Aiaivos%5D2.0.co%3B2

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