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What Goes in One End Comes Out the Other

SNARC August 2014 Fish Tales

What Goes in One End Comes Out the Other

 

Our Nutrition Research Program has several on-going projects this summer. In the first study, in collaboration with Dr. Rebecca Lochmann, University of Arkansas at Pine  Bluff’s Aquaculture and Fisheries Department, doctoral student Yathish Ramena just

finished a digestibility trial at HKDSNARC to determine amino acid and gross nutrient availability in hybrid striped bass of traditional (Ozark variety) and three non-genetically-modified varieties of soybeans. This is the first phase of a two-phase project entitled:

Minimizing use of fishmeal in hybrid striped bass diets using non- GMO soybeans selectively bred for use in aquafeeds that is funded by the Arkansas Soybean Promotion

Board. The project aims to determine the biological value of new varieties of soybean meal as replacements for fish meal in hybrid striped bass diets. Once nutrient availability values are determined, test diets will be extruded using commercial techniques by our ARS and USFWS collaborators—Drs. Rick Barrows and Gibson Gaylord in Bozeman, Montana—in order to closely mimic the quality and characteristics of a commercial floating fish feed. The extruded replacement diets along with a control diet containing typical levels of fish meal will then be fed to juvenile hybrid striped bass in a tank-feeding trial at HKDSNARC later this summer.

For more information, please contact Steven.Rawles@ars.usda.gov

 

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