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Título

Enhancement of the immune response and protection induced by probiotic lactic acid bacteria against furunculosis in rainbow trout (Oncorhynchus mykiss)

AutorBalcázar, José Luis CSIC ORCID; Blas, Ignacio de; Ruiz-Zarzuela, Imanol; Vendrell, Daniel; Gironés, Olivia; Múzquiz, José Luis
Palabras claveProbiotics
Colonization
Humoral and cellular response
Prevention
Furunculosis
Rainbow trout
Fecha de publicación2007
CitaciónFEMS Immunology and Medical Microbiology 51(1): 185-193 (2007)
ResumenWe analysed the effect of probiotic strains on the cellular and humoral immune responses of rainbow trout (Oncorhynchus mykiss), and their capacity to prevent furunculosis during a challenge trial. Probiotic strains (Lactococcus lactis ssp. lactis CLFP 100, Leuconostoc mesenteroides CLFP 196, and Lactobacillus sakei CLFP 202) were administered orally to fish for 2 weeks at 106 CFU g−1 of feed. In comparison to untreated control fish, the phagocytic activity of head kidney leukocytes and the alternative complement activity in serum were significantly greater in all probiotic groups at the end of the second week. With the exception of the group fed with Lactobacillus sakei, superoxide anion production was also significantly increased in the probiotic groups. Analysis of lysozyme activity did not exhibit any significant difference in the probiotic and control groups. Fifteen days after the start of the probiotic feeding, fish were challenged with Aeromonas salmonicida ssp. salmonicida. The fish supplemented with probiotics exhibited survival rates ranging from 97.8% to 100%, whereas survival was 65.6% in fish not treated with the probiotics. These results demonstrate that probiotic supplementation to fish can reduce the severity of furunculosis, and suggest that this reduction may be associated with enhanced humoral and cellular immune response.
Descripción9 páginas, 6 figuras
Versión del editorhttp://dx.doi.org/10.1111/j.1574-695X.2007.00294.x
URIhttp://hdl.handle.net/10261/55435
DOI10.1111/j.1574-695X.2007.00294.x
ISSN0928-8244
E-ISSN1574-695X
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