Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Alternative fish feeds use less fishmeal and fish oils

14.10.2010
As consumers eat more fish as part of a healthy diet, U.S. Department of Agriculture (USDA) scientists are helping producers meet this demand by developing new feeds that support sustainable aquaculture production.

Commercial fish farms have traditionally fed feeds that include high levels of fishmeal and fish oil, according to fish physiologist Rick Barrows with USDA's Agricultural Research Service (ARS). But the fishmeal in these feeds comes from small, bony fish species like menhaden, herring and capelin, which are in short supply.

Also, more people around the globe are turning to fish as a source of lean protein, driving the growth of aquaculture worldwide. Aquaculture now supplies half of the seafood produced for human consumption.

To satisfy these demands, Barrows and his colleagues at the ARS Small Grains and Potato Germplasm Research Unit in Hagerman, Idaho, are developing alternative fish feeds made from concentrated plant proteins.

Barrows produces the feed himself using a piece of food manufacturing equipment called a "cooking extruder." Barrows is formulating and manufacturing feeds for several fish species, including trout, salmon, white sea bass and yellowtail.

At the ARS National Cold Water Marine Aquaculture Center in Franklin, Maine, research leader William Wolters works with Barrows to develop diets for Atlantic salmon, using concentrated plant proteins. Protein levels in most grain and oilseed sources are low and need to be concentrated to reach the high protein requirements of fish.

Wolters is currently evaluating six experimental diets which contain combinations of alternative proteins, plus a fishmeal diet being fed to fish for comparison. According to Wolters, the ongoing studies seem to indicate that the modern alternative diets work better for the fish than previous alternative diets.

Feeds for warm-water fish are being developed at the Harry K. Dupree Stuttgart National Aquaculture Research Center's facility in Fort Pierce, Fla. ARS fish biologist Marty Riche is working with Barrows to develop feed for pompano, one of Florida's highest valued fish. Riche uses ingredients such as corn, gluten meal, and soy proteins to develop feeds that contain less fishmeal.

Read more about this and other aquaculture-related research in the October 2010 issue of Agricultural Research magazine, available online at: http://www.ars.usda.gov/is/AR/archive/oct10/feeds1010.htm.

ARS is USDA's principal intramural scientific research agency. This research supports the USDA priority of promoting international food security and agricultural sustainability.

USDA is an equal opportunity provider, employer and lender. To file a complaint of discrimination, write: USDA, Director, Office of Civil Rights, 1400 Independence Ave., S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice), or (202) 720-6382 (TDD).

Sharon Durham | EurekAlert!
Further information:
http://www.ars.usda.gov

Further reports about: ARS Agricultural Research USDA aquaculture fish species

More articles from Agricultural and Forestry Science:

nachricht Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli
26.04.2017 | University of the Basque Country

nachricht New data unearths pesticide peril in beehives
21.04.2017 | Cornell University

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

Scientist invents way to trigger artificial photosynthesis to clean air

26.04.2017 | Materials Sciences

Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli

26.04.2017 | Agricultural and Forestry Science

SwRI-led team discovers lull in Mars' giant impact history

26.04.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>