PRODUCTION

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Microalgae can increase efficiency and sustainability of recirculating aquaculture systems

Incorporating microalgae into recirculating aquaculture systems (RAS) can more effectively manage waste while transforming it into valuable products, according to researchers in Germany and Belgium.

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Cage modifications can help manage sea lice problems — but care needed

Sea lice are one of the primary problems affecting Atlantic salmon farming, with severe infestations impacting fish health and performance, and the stress of treatments being linked with the development of other diseases. Changes to the sea cages that salmon are often farmed in offers one solution, according to an expert.

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Combining technology and knowledge to improve aquaculture in Southeast Asia

Southeast Asia is one of the world’s fastest-growing regions for aquaculture, but production efficiency, environmental impact and disease remain bottlenecks for sustainable production.

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Exposed, offshore salmon farms may complicate fish-health challenges

Life on exposed offshore aquaculture sites may increase the susceptibility of farmed Atlantic salmon to parasites and pathogens.

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Cutting antibiotic use in Chile’s growing salmon sector

An interview with Francisco Vallejos, MV, deputy health manager for Camanchaca SA.

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Low-light conditions affect tilapia survival and disease resistance

Light can affect the survival, growth and immune response of fish. New research shows that persistent exposure to low-intensity light decreases the survival rate of Nile tilapia but stimulates their disease resistance.

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Submerged cages with air domes improve sea lice infestation but reduce welfare

Submerging Atlantic salmon sea cages with air domes can greatly reduce sea lice infestation levels, but this appears to come at a high cost.

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Non-medicinal delousing approaches cause damage to salmon gill tissue

New research shows that thermal and mechanical delousing techniques used in Atlantic salmon aquaculture can cause damage to gill tissue, though the health impacts of this on farmed fish remain unknown.

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RAS water exchange rates could affect Nile tilapia welfare

Recirculating aquaculture systems (RAS) are often viewed as viable options…

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Optimizing recirculating aquaculture systems: Fish farming’s hot topic

It’s a boom time for recirculating aquaculture systems (RAS) — but unanswered questions remain in ensuring this ever-more-prevalent approach to large-scale fish production reaches its considerable potential.