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Aquaculture nutrition and long-term sustainability of the sector Patrick Sorgeloos, Ghent University, Belgium

Brussels Development Briefing n.32 F ish-farming the new driver of the blue economy? 3 rd July 2013 http://brusselsbriefings.net Aquaculture nutrition and long-term sustainability of the sector . Patrick Sorgeloos , University of Ghent, Belgium.

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Aquaculture nutrition and long-term sustainability of the sector Patrick Sorgeloos, Ghent University, Belgium

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  1. Brussels Development Briefing n.32Fish-farming the new driver of the blue economy?3rd July 2013http://brusselsbriefings.netAquaculture nutrition and long-term sustainability of the sector.Patrick Sorgeloos, University of Ghent, Belgium

  2. Aquaculture nutrition and long-term sustainability of the sector Patrick Sorgeloos, Ghent University, Belgium Fish-farming: the new driver of the blue economy? Brussels Policy Briefing No 32 – July 3, 2013

  3. Priorities for future aquaculture from an empiricial approachtowards a knowledge-based bio-industry AQUACULTURE : BLUE BIOTECHNOLOGY OF THE FUTURE ? resulting in new concepts & products for a sustainable aquaculture

  4. “Aquaculture is probably the fastest growing food-producing sector, and currently accounts for almost 50% of the world’s food fish and is perceived as having the greatest potential to meet the growing demand for aquatic food.” “Given the projected population growth over the next two decades, it is estimated that by 2030 at least an additional 40 million tons/year of aquatic food will be required to maintain the current per caput consumption.”

  5. Courtesy Harache

  6. Priorities for future aquaculture Full independence from fisheries stocks for LIPID AND PROTEIN INGREDIENTSin aquaculture feeds The fish meal / fish oil contradiction

  7. Priorities for future aquaculture FED aquaculture EXTRACTIVE aquaculture nutrient recycling

  8. FOOD versus BUSINESS aquaculture FOOD aquaculture BUSINESS aquaculture Asia, esp. China - long history - large production - integrated farming • Recent developments (since 1960s) • Japan, later Europe, America’s, etc • successful new industry • monoculture

  9. FOOD versus BUSINESS aquaculture BUSINESS aquaculture FOOD aquaculture Asia, esp. China - long history - large production - integrated farming • Recent developments (since 1960s) • Japan, later Europe, America’s, etc • successful new industry • monoculture

  10. Success stories in business aquaculture PANGASIUS CATFISH FARMING IN VIETNAM > 1,000,000 TONS/YEAR

  11. Success stories in food aquaculture CHINESE MITTEN CRAB Eriocheir sinensis annual production yields

  12. ENERGY N/P WATER

  13. Priorities for future aquaculture integration of culture of different trophic levels MOLLUSCS MACROALGAE FINFISH

  14. 8 km

  15. Priorities for future aquaculture from an empiricial approachtowards a knowledge-based bio-industry AQUACULTURE : BLUE BIOTECHNOLOGY OF THE FUTURE ? resulting in new concepts & products for a sustainable aquaculture

  16. Priorities for future aquaculture • - Complete independence from natural stocks through DOMESTICATION • - Improved / more cost-effective SEEDPRODUCTION • - Better targeted SPECIES SELECTION • - Development of more efficient stocks through SELECTIVE BREEDING • - More MICROBIAL MANAGEMENT for more sustainable production • - Better understanding of IMMUNE SYSTEMS in vertebrates and invertebrates • - More INTEGRATED PRODUCTION SYSTEMS for plant and animal farming • - COASTAL AND OFF-SHORE FARMS of food and energy • - Full independence from fisheries stocks for LIPID AND PROTEIN INGREDIENTS in aquatic feeds • - More attention for INTEGRATION of restocking activities with FISHERIES management • - SOCIETAL LEVERAGE: • - multi-stakeholder interaction • - international cooperation on a win-win basis

  17. Microbes “run the world”

  18. Priorities for future aquaculture more MICROBIAL MANAGEMENT for more sustainable production 70 % of all farmed fish are produced in ponds BIO FLOCS What is the roleof the microflora ? Recent documentation:30 % N contributionfrombioflocs !

  19. C/N 10 C/N 50 Volume of bioflocs formed per day in differen C/N regimes

  20. molluscs Biofloc consumers Artemia biomass

  21. from Cunningham, “Knowledge Based Bio-Economy towards 2020” Brussels, September 14, 2010

  22. 2. Challenges, threats & opportunities Global primaryproduction and foodsupply contribution to food supply total bioproduction terrestrial quantity proteins plants & animals marine 16 % of proteins 2 % in quantity fisheries & aquaculture plants & animals from Field et al. (1998) and Duarte et al. (2009)

  23. Aquaculture Nutrition - full independence from fishmeal and fish oil is not the only priority -

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