Farmed salmon nutrients from waste could feed marine industry

Farmed salmon nutrients from waste could feed marine industry

ScienceDaily (23 November, 2012) - salmon production from waste waters off the coast of Norway is. Researchers say this is a medium - NOK 6 billion worth per year - for a new biological product will be exploited.
2009 Norway fish salmon and salmon fish farms produce over a million tons, 1.2 million tons of high quality feed and went into production. But administered products breathing in plenty of feed, faeces and uneaten feed around the water continues.
This means that an important part of aquaculture feed industry actually both organic and inorganic waste is fertilising the ocean with nutrients. The cost of these nutrients is estimated at NOK 6 billion annually.
High economic growth, low pollution
Project "Integrated aquaculture sea water high yield (integrated) areas for sustainable culture technology," researchers studied the kelp waste and / or mussels harvested for use as nutrients can be is. The science and (NTNU) Norway University of Technology Associate Professor Kjell Inge Reitan was led by the Research Council of Norway's initiative to promote sustainable seafood production as part of the funding 've received.
"The integrated approach than trophic aquaculture (IMTA) significant investment in aquaculture will provide added value," explains Dr. Reitan, "while at the same time reduce the potentially adverse environmental effects have to. "
Environmental organizations are important aquaculture waste harmful to the environment.
Kelp can help: Many application areas.
Carrying out experiments in a research institute SINTEF researchers documented the harvest of kelp aquaculture facilities is progressing well. Mussel cultivation under similar conditions shows promise.
Kelp inorganic nitrogen and phosphorus discharged by fish farms are required in large quantities. Norway, one of the most common species of macroalgae, Laminaria saccharina - sea kelp strip or sugar is known as - especially for use as biofuel and feed additive for industrial and chemical grow out It's a promise. Dr. Reitan to mass with several companies on kelp cultivation for the production of bioenergy cooperation is seen.
"The growth in bioenergy production and feed needs to be encouraged by the players," stressed Dr. Reitan it. "I can not believe kelp salmon farming industry trade in agriculture will be added in the near future, the integrated production industry will increase sustainability and greener profile."
Kelp should grow all year
Produced in Norway by industrial discharge on the basis of statistics, researchers from kelp IMTA process 1.7 million tons of annual capacity is estimated at 0.6. IMTA mussels harvested using methods for the assessment of capacity is 7 200 21 500 tonnes. The scale cultivation of 82 250 square kilometers of sea area will need. Worldwide, approximately 14 million tons of aquatic plants are harvested annually.
Kelp is harvested year-round effort required skill. SINTEF researchers in the artificial cultivation of year-round sugar kelp sporophytes (juvenile plants) has successfully organized.
SINTEF research scientist Silje Forbord said "This strong growth potential of kelp possible when conditions are favorable exploit that."
mussel cultivation Quadrupling
Researchers estimate that Norway IMTA salmon production methods using waste to use nutrients that four times current annual capacity of 3 mussels 000 5 000 tons of agricultural crops to achieve.
Research Council's Research Programme Aquaculture - Growth (HAVBRUK) an industry "aykuaklcr exploitation of nutrients from salmon (exploitation)" research project is to determine how to find and cultivate kelp and mussel maximum use of facilities loss of nutrients designed to aquaculture industry.