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Aquaculture Forum Bremerhaven 2012-2013: Fischernährung und Aquakulturtechnologie am Scheideweg

18.02.2013 bis 19.02.2013

The future of fish nutrition: high versus low tech systems or integrated aquaculture?

With the expansion of the aquaculture industry it is obvious that fishmeal replacement is a must. New protein sources may not bet he prime concern but marine fats are to meet the demanded nutritional quality of the final products and provide the required level of unsaturated fatty acids. What are the future solutions? Further, the trend towards intesification may or may not continue, although water resource systems will be at the premium in most of the aquatic environments while the competition for water resource between various industries and communities will drastically increase in the future. Recycling of water is one issue that gains importance in many parts of the world, however, recycling of any waste originating from the culture activity will increasingly become a necessity. We have to recognize that wastes become new resources that can help to increase economic as well as environmental efficiency and compatibility. Integrated recirculating systems where wastes are directly used as valuable resources is not necessarily a new concept but in need of optimization and exploration of multi-purpose utility of natural resources such as water, nutrients and energy. The workshop will specifically focus on these issues by addressing the key subject areas outlined below:


Day 1 February 18

08:45 - 09:00 h Opening session


09:00 - 12:00 h Session I - Finfish Nutriton:

09:00 – 09:30
Fish oil replacement in aquafeeds- effect on product quality
Referent: Dr. Christian Schlechtriem (Germany)

09:30 – 10:00
Availability of protein resources for aquaculture: a physiological perspective
Referent: Prof. Dr. Ulfert Focken (Germany)

10:00 – 10:30
Potential use of Micro-& Macro-algae in aquafeeds
Referent: Dr. Ingrid Lupatsch (United Kingdom)

10:30 - 10:45
Fish culture based on efficiently pre-mixed feeds
Referent: Dr. Wilfried Tiegs (Germany)

10:45 – 11:00
New tricks for an old dog: the blue mussel Mytilus edulis as feed stimulant in fish nutrition
Referent: Dr. Florian Nagel & Prof. Dr. Carsten Schulz (Germany)

11:00 – 11:20 h Health break

11:20 – 11:35
Feed additives enabling sustainable aquaculture
Referent: Dr. Peter Ader & Dr. Markus Matuscheck (Germany)

11:35 – 12:00
A displaced truth: Constraints set on feed formulation by European standards and the retail sector
Referent: Dr. Hanno Slawski (Denmark)


12:00 - 13:00 h Session II - Gamete quality control; rearing larvae and juveniles

12:00 – 12:20
Gamete quality control in aquaculture: the need for standardized protocols in gamete preservation, fertilization and egg incubation
Referent: Dr. Akos Horvath (Budapest) & Dr. Juan Asturiano (Spain)

12:20 – 13:00
Status and perspectives of fish and shellfish larviculture
Referent: Prof. Dr. Patrick Sorgeloos (Germany)

13:00 - 14:00 h Lunch break


14:00 - 16:00 h Session III - Recirculation systems: past, presence and future

14:00 – 14:20
Recirculating aquaculture (RAS) analysis: main issues on management and future challenges
Referent: Dr. Diego Mandiola (Spain) & Mrs. Maddi Badiola

14:20 – 14:35
German Continental mariculture: (1) concept & Technology
Referent: Prof. Dr. Uwe Waller, Erwin Sander, Dr. Bert Wecker (Germany)

14:35 – 14:50
German Continental Mariculture: (2) Strategy & Economy
Referent: Dr. Bert Wecker, Erwin Sander, Prof. Dr. Uwe Waller (Germany)

14:50 – 15:10
Self-cleaning inherent gas denitrification reactor: A new approach for nitrate elimination in RAS
Referent: Dr. Andreas Müller-Belecke (Germany) & Mr. Spranger

15:20 – 15:40
Micro-flotation: effective removal of settable & suspended solids in RAS
Referent: Dr. Ulrich Kronert (Germany)

15:40 – 16:00
Accumulation of inorganic metabolites in RAS and their effects on turbot (Psetta maxima) health and production performance: implications for diet formulation and water treatment
Referent: Chris van Bussel

16:00 - 16:20 Health break


16:20 - 17:00 h Session III: (continued)

16:20 – 16:40
The use of ozone in recirculation systems: principles, advantages & limitations
Referent: Dr. Jaime Orellana (Chile)

16:40 - 17:00
Aquaculture for release: producing juveniles fit for survival in nature (ranching, stock enhancement, re-establishment)
Referent: Prof. Dr. Harald Rosenthal (Germany)


17:00 - 18:00 h Session IV: Integrated farming systems: constraints and perspectives

17:00 – 17:30
Ecological aquaculture in land-based and open water systems
Referent: Prof. Ian Bricknell (USA)

17:30 – 18:00
Integrated Agriculture-Aquaculture Systems in Tropical Developing Countries: Experiences from Research and Cooperation in Africa and Asia
Referent: Dr. Uwe Scholz & Dr. Mark Prein (Germany)

19:00 h Conference Dinner


Day 2 February 19


09:00 - 09:40 h Session IV - Integrated farming systems (continued)

09:00 – 09:20
Aquaponics: A potential systems for future aquaculture development in Germany?
Referent: Prof. Dr. Harry Palm (Germany)

09:20 – 09:40
Aquaponics: sentimental vision or seminal contribution to a sustainable aquaculture development
Referent: Dr. Sven Würtz (Germany)


09:40 - 10:40 h Session V: Bio-economics in aquaculture

09:40 – 10:10
Green growth in aquaculture: Overcoming barriers to further development of the sector
Referent: Carl-Christian Schmidt (France)

10:10 – 10:30
The contribution of aquaculture to bio-economy
Referent: Prof. Dr. Thomas Hirth (Germany)

10:30 – 10:50
Production of pike perch (Sander lucioperca) in RAS: biotechnologcal prospects and economic feasibility
Referent: Dr. Andreas Müller-Belecke (Germany) & Steffen Zienert

10:50 – 11:10
Considerations on the technical feasibility and economics of turbot RAS systems in Germany
Referent: Dr. Michael Ebeling (Germany)

11:10 – 11:30 h Health break


11:30 - 12:30 h Session VI - Panel discussion (session chairs, speakers, participants)


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