Editor Professor Simon Davies Email: simond@aquafeed.co.uk Associate Editors Dr Albert Tacon Email: albertt@perendale.co.uk Dr Yu Yu Email: yuy@perendale.co.uk Dr Kangsen Mai (Chinese edition) Email: mai@perendale.co.uk Editorial Advisory Panel • Abdel-Fattah M. El-Sayed (Egypt) • Dr Albert Tacon (USA) • Professor António Gouveia (Portugal) • Professor Charles Bai (Korea) • Colin Mair (UK) • Dr Daniel Merrifield (UK) • Dr Dominique Bureau (Canada) • Dr Elizabeth Sweetman (Greece) • Dr Kim Jauncey (UK) • Eric De Muylder (Belgium) • Dr Pedro Encarnação (Singapore) • Dr Mohammad R Hasan (Italy) Editorial executive Olivia Holden Email: oliviah@perendale.co.uk Editor - Asia Pacific Roy Palmer Email: royp@perendale.com Circulation & Events Manager Tuti Tan Email: tutit@aquafeed.co.uk Design Manager James Taylor Email: jamest@perendale.co.uk International marketing team (UK) Darren Parris Email: darrenp@aquafeed.co.uk Tom Blacker Email: tomb@perendale.co.uk Tilly Geoghegan Email: tillyg@perendale.co.uk Latin America Ivàn Marquetti Email: ivanm@perendale.com Pablo Porcel de Peralta Email: pablop@perendale.com India Raj Kapoor Email: rajk@perendale.com Africa Nathan Nwosu Email: nathann@perendale.com More information: International Aquafeed 7 St George's Terrace, St James' Square Cheltenham, GL50 3PT, United Kingdom Tel: +44 1242 267706 Website: www.aquafeed.co.uk
Creoso - welcome
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am on my way to participate in the aquatic China and VIV meeting in Beijing as I write this editorial. In the next issue of IAF we will report this event in detail and the range of topics in aquaculture nutrition from experts around the world and China in particular. This will be my second visit to this great nation and I am looking forward to the coming week with my colleagues from the magazine publishers Roger Gilbert and Tuti Tan. We have as usual, a most exciting issue for the autumn with a variety of interesting news items and reports from the industry at large and our continuing inclusion of related technology features that link with feed delivery and management issues as well as novel engineering systems bringing new opportunities for aquaculture. This is pertinent for the RAS technology for aquaculture that we discuss. Given major problems of disease in the global shrimp industry, we report on new strategies to curb such problems by novel feed additives in a controlled scientific challenge study. Professor Simon Davies Mycotoxins are the stealthy enemy of the animal feed industry with aquafeed being no exception and so opportunities to utilise natural fee based additives as solutions is welcome and we feature the use of seaweed extracts as such agents. Live feed revolutions in the early hatchery phases are making tremendous progress and a feature illustrates these approaches. Yeast is nature’s word food and a very topical feature reporting on applications of yeast and yeast derived fractions as potent immune modulators in aquafeeds offers a sound perspective for current and future use. With China in mind it is appropriate that carp is our main fish focus in this issue and the Chinese freshwater fish culture scene. No doubt I will enjoy sampling the delights of China on my latest mission and so I must be catching my flight. See you in the next edition and good reading till next time! Simon Davies
Sweet potato protein breakthrough for Philippine fish farmers
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n The Philippines aquaculturists are exploring a new source of protein for fish - the local sweet potato, Ipomoea batatas. The nutritional properties of this vegetable root crop are widely recognised and are currently being exploited for inclusion in fish deists at the Tariac Agricultural College in The Philippines. The project is receiving government support through the Bureau of Agricultural Research and its program of commercialisation of technology. The National Technology Commercialisation Program is attempting to bring to market and provide fish farmers with affordable, high-quality formulations for fish. Enriching the potato was achieved through a microbial fermentation process over a two week period and which resulted in a protein product 17 times more in protein content than non-fer-
mented potatoes and having a shelf life of up to two years without adding antioxidants, say the researchers. To date the project has produced some 17 tonnes of PESP (protein-enriched sweet potato for feeding bangus, tilapia and shrimps. PESP is being hailed in The Philippines as a 'breakthrough' product for the aquafeed industry. The Technical College, which holds the patent, is planning to build a feedmill and move to industrial production and marketing of the product.