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Research on Captive Broodstock Programs for Pacific Salmon

Annual Report 2000-2001

Document format: pdf

Publisher: U.S. Department of Energy

Creation date: June 1, 2001

It is not yet possible to define a feeding regimen for captively-reared stocks similar to their natural regimen that enhances the post-release fitness of juveniles and improves the reproductive performance of adults. In the natural environment, seasonal differences in food quality and quantity have profound effects on growth and 'wild' attributes, such as external coloration and fin quality. Formulating the right feeds for conservation fish held for long periods in captivity before release is more complicated than formulating diets for farm fish. Recent research in salmonid nutrition shows it is necessary to consider daily dietary protein intake and protein intake relative to total dietary energy level, rather than simply the levels of total dietary lipid.

Key Words: DOE • Salmon • Threatened and Endangered Species • Natural Stock Augmentation