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Utilizing Seafood Processing Trimmings in Diets of Farmed Marine Finfish

Hubbs-SeaWorld Research Institute Aquaculture Program Research Report 2011
Utilizing Seafood Processing Trimmings in Diets of Farmed Marine Finfish

A large portion of seafood caught for human consumption is discarded after the edible portion has been removed despite the fact that the trimmings are still an excellent source of high quality protein meal and oil (Figure 1). In order to make use of this underutilized resource and help relieve a burden on other exploited fisheries, such as sardine, HSWRI researchers are attempting to use regionally sourced processing trimmings to replace industrial fish meal and fish oil in aquaculture feeds for marine finfish. This project is funded by NOAAs Saltonstall-Kennedy Program in collaboration with Pete Nicklason of FishTek, Inc in Seattle, WA, and Steve Foltz of Chesapeake Fish Company in San Diego. Project advisors include Dr. Mike Rust of NOAA Fisheries, Dr. Rick Barrows of USDA/ARS and Chris Nelson of Nelson and Sons Feed Company.
To start this project, HSWRI conducted a regional survey of fish processing facilities in Southern California to document the seasonal availability of various types and quantities of processing trimmings. Additionally, processors were asked if they would be interested in participating in a program that recycles their trimmings. Feedback thus far has been very positive.
In the main part of this project, Chesapeake Fish Company is sending various types of processing trimmings to FishTek for analyses and further processing into meal and oil components. Proximate composition of the trimmings (content of protein, lipid, fiber, ash, etc.) is being used to determine how to best include them in diet formulations. Research Scientist Dave Jirsa will begin conducting feeding trials this summer using white seabass (Atractoscion nobilis) and California yellowtail (Seriola lalandi) cultured at HSWRI.

 

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