WisconsinAquaculture.com - NOAA, USDA look to trimmings for fishmeal
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NOAA, USDA look to trimmings for fishmeal

By Christine Blank, www.SeafoodSource.com. November 12, 2013

Increasing costs and demands for fishmeal in aquaculture production are leading researchers with NOAA and the USDA to explore alternative and more efficient fishmeal techniques, including stabilizing fish trimmings - an existing idea that may mature if the demand for fishmeal keeps going up.

"Worldwide, about 25 percent of the fishmeal already comes from fish trimmings. Large fisheries, such as the whitefish fisheries in Alaska already have conventional fishmeal plants for their by-products. However, there is potential to get more fish trimmings meal from the smaller and shorter duration fisheries with new technologies" Michael Rust, science coordinator for the office of aquaculture at NOAA Fisheries, told SeafoodSource.

One of the challenges is gathering fish trimmings from all the small fish processors in very remote areas. "It doesn't make sense to put a conventional fishmeal plant [in those areas]. You would have to design a facility that runs 10 days a year," Rust said.

As a result, NOAA and USDA researchers are determining how to stabilize small fishmeal lots to be utilized in large aquaculture operations. "Fishmeal can be stabilized in the same way that yogurt is stabilized: by balancing its pH. Then, it becomes more shelf-stable so, in the case of yogurt, instead of it lasting two to three days, it can last two to three months. You can take the fish trimmings and turn that into fishmeal over three to four months," Rust said.

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