Open AccessEffects of Bio‐Mos ® on Growth and Survival of Channel Catfish Challenged with Edwardsiella ictaluri
Author(s) -
Peterson Brian C.,
Bramble Tyler C.,
Manning Bruce B.
Publication year - 2010
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.2009.00323.x
Subject(s) - edwardsiella ictaluri , catfish , biology , fishery , channel (broadcasting) , zoology , fish <actinopterygii> , ictalurus , engineering , electrical engineering
A major problem in the catfish farming industry has been high disease loss to enteric septicemia of catfish (ESC), caused by the bacterium Edwardsiella ictaluri. Methods currently used to control this disease include antibiotic therapy, vaccination, and restricted feeding. Another method that has been examined is the addition of immunostimulants to the diet. Immunostimulants such as glucans with β-1,3 and β-1,6 glycosidic linkages (β-glucans) have been used to improve disease resistance but the results have been inconsistent. Channel catfish injected with yeast glucan responded to subsequent E. ictaluri immunization with higher serum antibody titers and reduced mortality relative to controls (Chen and Ainsworth 1992). Similarly, Aakre et al. (1994) reported that Atlantic salmon injected with a mixture of Aeromonas salmonicida bacterin and yeast glucan showed enhanced antibody responses. Yeast glucan has also been applied by immersion and oral administration. Raa et al. (1992) demonstrated that oral administration of yeast glucan to Atlantic salmon increased protection against V. anguillarum and V. salmonicida. Tiger shrimp immersed in yeast glucan solution showed enhanced protection against V. vulnificus infection (Sung et al. 1994). Although