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Spanish trials address transport of wild juvenile tuna for ongoing study
https://www.globalseafood.org/advocate/spanish-trials-address-transport-wild-tuna-juveniles-ongoing-study/…impacts of feeding based on raw fish. Up to now, the fish have adapted well to very actively consume chopped, defrosted mackerel, and they will likely adapt readily to feed…
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Evaluating low-energy recirculating system for inland production of marine finfish juveniles
https://www.globalseafood.org/advocate/evaluating-low-energy-recirculating-system-inland-production-marine-finfish-juveniles/…to a peak of 55 kg per cubic meter before grading and removal of the larger fish. Feeding rates have been greater than 1 kg feed per day of sinking…
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Feeds affect lipid body composition, quality
https://www.globalseafood.org/advocate/feeds-affect-lipid-body-composition-quality/…elevated lipid levels if appropriate concentrations of vitamin E are included in their feed. Feed effects: body composition Feeding trials with carp (Cyprinus carpio L.) in which various protein levels…
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With animal welfare an emerging consumer concern, fish farmers take stock
https://www.globalseafood.org/advocate/with-animal-welfare-an-emerging-consumer-concern-fish-farmers-take-stock/…efforts in the United States have targeted catfish and lobster processing. Diggles also mentioned a growing effort in Australia to shine a light on a common technique used by shrimp…
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CSIRO research evaluates technologies to produce genetically protected, all-female shrimp
https://www.globalseafood.org/advocate/csiro-research-evaluates-technologies-produce-genetically-protected-all-female-shrimp/…Polyploidy approaches can also bias sex ratios among populations, which can be used to improve production in sexually dimorphic species such as shrimp. Female shrimp grow larger than male shrimp,…
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Inside the commercial production of artemia biomass in Ecuador
https://www.globalseafood.org/advocate/inside-commercial-production-artemia-biomass-ecuador/Product is an important live feed for shrimp broodstock maturation Biomass of artemia adults is used to feed maturing shrimp broodstock in commercial hatcheries. Photo by Hans Hillewaert, CC BY-SA…
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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…