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How Aquaculture research can contribute to further sustainable development of seafood industry in the northern areas? Prof. Olai Einen, Research Director Nofima Marin Aquaculture activities in the Northern regions of Norway Other farmed species • Arctic charr • King Crab • Sea Urchins • Halibut The three northern counties in Norway have increased the aquaculture production the last 10 yrs 350 000 Production (tons round wgt) Main species for Aquaculture in the northern regions • Salmon • Rainbow trout • Atlantic cod 300 000 250 000 200 000 150 000 100 000 50 000 0 1995 2000 2005 2010 Genetic improvement programs – a key element for effecient aquaculture Important traits in salmon: 1) 2) 3) 4) Accumulated selection response Genetic gain (G) Growth Sexual maturation Disease resistance Flesh quality Genetic gain in Atlantic salmon after five generations of selection Selected (5G) vs. Wild S - W, % Growth +113 Feed consumption +40 Protein retention +9 Energy retention +14 FCR, feed/gain -20 Thodesen et. al., 1999 Breeding and genetics • Nofima started in 1971 the first genetic programme in fish; namely the salmon breeding programme. • Till date, our basic research and applied work on genetic improvement based on selective breeding have covered 11 species worldwide – Increased growth rate – Increased feed utilisation – Increased disease resistance • We are currently the host the “National Breeding Programme for Cod” Kraknes, Tromsø Feed development and aquaculture nutrition Feed is the major cost in intensive fish farming; in salmon culture ca 60% of production cost Feed conversion ratio of salmon has been decreased substantially due to nutrition research, technology development and farm management Feed Conversion Ratio: kg feed/ kg fish prodused 3,5 3 2,5 2 1,5 1 0,5 0 1975 1980 1985 1990 1995 2000 2005 2009 Feed development and aquaculture nutrition FEED TECHNOLOGY - Extrusion - High lipid content - Physical quality COST EFFECTIVE RAW MATERIALS - Increased use of plant ingredients - Increased use of fishery by products IMPROVED UNDERSTANDING OF NUTRIENT REQUIREMENTS – Optimal protein/Energy ratio – N-3 HUFA – Amino Acids – Vitamins & trace elements IMPROVED FEED MANAGEMENT AT THE FARM - Appetite control devices - Growth models – references of feed intake The fatty acids EPA/DHA will be a limiting factor for aquaculture feeds • Salmon is known as a healthy product because of the rich content of n-3 fatty acids; especially the fatty acid EPA and DHA • Almost all fish oil, which is the main source of EPA/DHA in fish feed, is already used for fish feed. Therefore, it will be increasingly difficult to maintain a high level of EPA/DHA on the fish feed. • We need to work on several strategies for ensuring an acceptable high EPA/DHA level in farmed salmon: 1. New feed sources – Biotechnical developed plant or microorganisms – New marine sources like krill and calanus 2. Improve the salmon’s ability to convert fatty acids to EPA/DHA Fish health is always a challenge in aquaculture • Prevention of diseases – the main strategy – Vaccine development and immunology – Selection programs for increased disease resistance – Genetic markers for disease resistance – Balanced nutrition; feed additives with immune response – Optimising farming conditions – Exercise? – Epidemiology • Treatment – Anti-parasite treatment • Biological control by using Wrasse • Chemical treatment – Antibiotics (almost no use today) Harvested amount (tons) Antibiotics used (kg active ingredient) Use of antibiotics in salmonid culture in Norway is substantially reduced since the 1980-thies. Salmon production is the industrial animal production with the lowest consumption of antibiotics Vaccine Cold water vibriosis Vaccine Furunculosis Disease resistance in the breeding programme Strict authority regulations : Hygiene, zones, etc The Aquaculture Research Station (Kårvika/Tromsø) has a specialised unit for controlled disease challenge trials. Important for documentation of vaccines, breeding groups and immunostimulants Capture based aquaculture • A possibility to improve the market value of wild caught marine animals, for example: – Cod – King Crab • Keeping alive and also feed the captured animals to – wait for a better seasonal price in the market – obtain a better paid size class – improve fillet quality and fillet yield – improve meat content • Nofima was this year (2010) granted a ”Research Centre for Capture based farming” Processing and product development • Flesh quality – Studies on fillet gaping, soft flesh, discolouration, micro flora,… • Developing rapid on-line methods for flesh quality grading (NIR/VIS, x-ray, fluoricencs) • Process optimisation tools – statistics and data modelling • Packaging methods (MAP, CO2-emitters) • New fish products with focus on consumer preferences and health advantages of fish Summary • Aquaculture production is increasing fast in the northern region of Norway – Salmon is the main species, but there are several other opportinites for aquaculture including capture based aquaculture • To further develop successfully a sustainable aquaculture industry we need to further strengthen national and interanational R&D on areas like: – Genetic improvement – Cost effective and sustainable feed sources; special attention to EPA/DHA supply is needed – Fish health and welfare – Seafood quality and product development