Effect of dietary vitamin E and selenium on growth, survival and the prevalence of Renibacterium salmoninarum infection in chinook salmon (Oncorhynchus tshawytscha)
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Abstract
Groups of juvenile spring chinook salmon naturally infected with Renibacterium salmoninarum, the causative agent of bacterial kidney disease, were fed diets containing different levels of vitamin E and selenium for 214 days in fresh water and 110 days in seawater. The fish were fed vitamin E at concentrations of either 53±3 mg (designated e) or 299±9 mg (designated E) α-tocopheryl acetate equivalence/kg dry diet in combination with sodium selenite to give selenium concentrations of either 0.038±0.008 mg (designated s) or 2.49±0.15 mg (designated S)/kg dry diet. No mortality occurred in the group fed the 
diet, whereas mortality was 3% in the groups fed the 
and 
diets, and 31% in the group fed the 
diet. At the end of the experiment, weight gain and hematocrit values were significantly greater in those fish fed the E diets compared with those fed the e diets, whereas the hepato-somatic index was significantly higher in fish fed the e diets. Glutathione peroxidase activity in blood plasma was significantly higher in fish fed the S diets compared with those fed the s diets. No definite effect of dietary vitamin E and selenium on the prevalence and severity of natural R. salmoninarum infections was demonstrated.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Effect of dietary vitamin E and selenium on growth, survival and the prevalence of Renibacterium salmoninarum infection in chinook salmon (Oncorhynchus tshawytscha) |
| Series title | Aquaculture |
| DOI | 10.1016/0044-8486(94)90269-0 |
| Volume | 121 |
| Issue | 4 |
| Year Published | 1994 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Western Fisheries Research Center |
| Description | 16 p. |
| First page | 343 |
| Last page | 358 |
| Google Analytic Metrics | Metrics page |