The Journal of the World Aquaculture Society(JWAS) is an open access scientific journal devoted to the advancement of technological innovations and solutions to major issues facing the growth of global aquaculture. For more information about Open Access click here or visit the FAQ page.
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Nutritional evaluation of cricket, Gryllus bimaculatus, meal as fish meal substitute for olive flounder, Paralichthys olivaceus, juveniles.
Jeong, S-M, Khosravi, S, Mauliasari, IR, Lee, B-J, You, S-G, Lee, S-M.
Olive Flounder, Paralichthys olivaceus, is one of the most successfully cultured flatfish species worldwide. This marine species demands high levels of easily digested protein and current production methods still rely on large amounts of fishmeal or trash fish inclusion in formulated and freshly mixed diets respectively. In the latest featured article by Seong-Mok Jeong and co-authors investigated increasing inclusion of meal from cricket, Gryllus bimaculatus, to replace fishmeal in Olive flounder diets. Results showed up to 40% fishmeal replacement without any growth reduction. Antioxidant enzyme activity increased with cricket meal inclusion up to 60% but fatty acid profiles were impacted by high inclusion levels. Results indicate cricket meal is a readily available and viable protein source for partial fishmeal replacement for this valuable finfish species.For more papers form the Editor"s Choice Awards: Volume 52, Issue 4, please click here.
Special Issue: Status of U.S. marine finfish species for domestic aquaculture expansion
Edited by:Martin Riche and Megan Davis. 52(3): 497-763. (2021).
The special issue: Status of marine finfish species for domestic aquaculture application - guest edited by Martin Riche and Megan Davis - provides by far the most comprehensive and up-to-date review of the featured thirteen species’ development towards production in US marine aquaculture. Papers highlight decades of laboratory research into closing lifecycles, larval rearing and feeding through to growout requirements. Authors identify future research needs to achieve commercialization of the species covered. Bottlenecks are identified and discussed and the potential of each species is estimated by the leading authors involved.
Generously sponsored by the United States Department of Agriculture (USDA) Agricultural Research Services and the National Oceanic and Atmospheric Administration (NOAA) National Marine Fisheries Service, this open access special issue is available for all to enjoy and reference.
For more papers from the Editor"s Choice Awards: please click here.
Aerator energy use in shrimp farming and means for improvement.
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by Boyd, CE and McNevin AA (2021)
Claude Boyd and Aaron McNevin apply their exceptional knowledge to review energy use, and wastage, in aeration for shrimp operations. The range of energy use on shrimp farms is extremely large. It extends from 11.4 to 41.6 GJ/t shrimp across the variety of industry operators. Huge potential for efficiency improvements are identified, with the authors showing that energy use for aeration can be less than 10-15 GJ/t shrimp. Installed capacity is often excessive in many farms, as is application of aeration at early production stages. The use of older technologies like self-made long-arm aerators leads to excess energy use. Applying research data on improved aerator design could improve efficiency in Asia, while monitoring of dissolved oxygen is a simple and under-utilised way to determine efficacy and improve efficiency. This review provides practical and valuable recommendations to save energy and costs in shrimp production worldwide.