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Japan hopes aquaculture can save bluefin tuna
https://www.globalseafood.org/advocate/japan-hopes-aquaculture-can-save-bluefin-tuna/…dying on impact. Spawning is also unpredictable. Additionally, feed sustainability questions exist due to the vast amounts of feed that bluefin require. According to Metoki, a majority of the tuna’s…
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Functional ingredients driving shrimp feed innovation
https://www.globalseafood.org/advocate/functional-ingredients-driving-shrimp-feed-innovation/…to non-sustainable feed ingredients currently in the market, such as fishmeal and others. Tests of our shrimp ingredient incorporated into commercial feeds at several commercial shrimp farms in Asia and…
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Polyculture: Varied applications, benefits spark renewed interest
https://www.globalseafood.org/advocate/polyculture-varied-applications-benefits-spark-renewed-interest/…catfish, or other species. In low-productivity settings, filter-feeding species are usually stocked in the greatest numbers, while higher-producing systems are based on active-feeding fish. In 1994, Yang and coauthors reported…
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Microwave drying expanding to aquafeed production
https://www.globalseafood.org/advocate/microwave-drying-expanding-to-aquafeed-production/…feeds are traditionally dried using vertical or horizontal dryers, while pelleted aquafeeds are, in most cases, only dried by evaporative cooling using vertical counterflow or horizontal coolers. Microwave drying and…
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Towards sustainable aquafeeds: Evaluating fishmeal substitution
https://www.globalseafood.org/advocate/towards-sustainable-aquafeeds-evaluating-fishmeal-substitution/…Higher inclusion levels of N. oculata co-product, however, did not depress feed conversion (FCR), feed intake (FI), and fish survival, given that we observed no significant differences among the diets….
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Research on spawning, larval rearing of yellowtail jack continues at Hubbs-SeaWorld
https://www.globalseafood.org/advocate/research-on-spawning-larval-rearing-of-yellowtail-jack-continues-at-hubbs-seaworld/…at 20 to 30 days post-hatch, which coincided with attempts to wean the larvae off live feed. Increased water velocity and the use of automatic feeders helped reduce cannibalism. Uninflated…
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Improving the osmoregulatory capacity of Pacific white shrimp grown in low salinity
https://www.globalseafood.org/advocate/improving-the-osmoregulatory-capacity-of-pacific-white-shrimp-grown-in-low-salinity/…additional mineral salts: standard formulated feed (B35S E01), feed No. 1 formulated for low salinity (B35P BS01) and feed No. 2 formulated for low salinity (B35 BS02). Feeds were applied…
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Green water culture of California halibut larvae
https://www.globalseafood.org/advocate/green-water-culture-of-california-halibut-larvae/…improves performance Numerous studies have shown that the addition of microalgae to tanks during early rearing can improve larval performance for a number of species. The authors recently investigated the…
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Settler evaluation: Radial flow vs tangential flow
https://www.globalseafood.org/advocate/settler-evaluation-radial-flow-vs-tangential-flow/In a trial, radial-flow settler provided consistent removal of suspended solids If not effectively removed from recirculating aquaculture systems, fresh fecal matter and waste feed can degrade fish health and…
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With byproducts, getting more from – and for – fish
https://www.globalseafood.org/advocate/with-byproducts-getting-more-from-and-for-fish/Fishery and aquaculture silage production, collection, logistics all improving For aquaculture feed manufacturers, fishery and aquaculture byproducts account for about one-third of total raw materials used for fishmeal and fish…
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Proper grinding of aquaculture feed ingredients
https://www.globalseafood.org/advocate/proper-grinding-of-aquaculture-feed-ingredients/Consider quality of the equipment, costs, efficiency, reliability and serviceability It is general knowledge that feeds for shrimp and other aquaculture species must have particle sizes small enough to meet…
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Inline quality assurance, part 1
https://www.globalseafood.org/advocate/inline-quality-assurance-part-1/Proportioning and grinding The starting point for quality feed is quality ingredients. However, starting with high-quality ingredients does not ensure high-quality feed unless strict guidelines are implemented in each of…
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PDP (pressure differential piping) aeration
https://www.globalseafood.org/advocate/pdp-pressure-differential-piping-aeration/…pond and makes more of the pond bottom available to the shrimp as habitat. This reduces the average density of shrimp per unit area and improves feeding success by reducing…
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Global Aquaculture Innovation Award 2019 finalist: Pegasus Science
https://www.globalseafood.org/advocate/global-aquaculture-innovation-award-2019-finalist-pegasus-science/NIR technology improves aquafeed quality by detecting mycotoxins Denize Tyska and Adriano Mallmann of Pegasus Science, one of this year’s finalists for the Global Aquaculture Innovation Award. Courtesy photo. “You…
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Histamine testing: Costs, benefits of representative food safety test
https://www.globalseafood.org/advocate/histamine-testing-costs-benefits-of-representative-food-safety-test/…information down the marketing channel about how testing improves safety is difficult. If a food service company’s quality assurance program becomes part of the quality image of the brand, testing…
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A closer look at preconditioning: Mixing, residence time
https://www.globalseafood.org/advocate/a-closer-look-at-preconditioning-mixing-residence-time/…extrusion processing of aquatic feeds. In the preconditioning process, low-pressure steam and heat increase the moisture of the feed meal. In the pelleting process, the maximum moisture that can be…
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Production of polychaetes for Ecuador’s shrimp industry
https://www.globalseafood.org/advocate/production-of-polychaetes-for-ecuadors-shrimp-industry/…polychaetes for the maturation phase of penaeid shrimp broodstock improves the quality and quantity of shrimp nauplii (shrimp larval; stage) produced. The genera Australonuphis sp. and Perinereis sp. have been…
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Role of tilapia in rural aquaculture
https://www.globalseafood.org/advocate/role-of-tilapia-in-rural-aquaculture/…such scaled-down systems to small-scale farmers usually fail. Fertilization of ponds with livestock manure is semi-intensive fish culture, but livestock raising in feedlots is an intensive feeding mode beyond the…