Algal oil shows promise as fish-oil substitute in feed for young salmon

Algal oil can replace fish oil in the feed of farmed Atlantic salmon parr without affecting their growth or ability to transition to seawater.

Untitled design

Algal oil shows promise as fish-oil substitute in feed for young salmon

Salmonids

Aerial drone photo of fish farming unit of sea bass and sea brea

Managing health risks in Mediterranean aquaculture’s least-controllable environment

The consolidation of Mediterranean aquaculture is standardizing production practices in the region and leading to better biosecurity management, but growing out fish in the unforgiving environment at sea poses the sort of challenge that demands realistic, practical solutions.

Salmonid x[]

Simulation offers insight into emerging-disease spread on salmonid farms

A new computer simulation approach may help better understand how emerging diseases could spread across salmonid farms in England and Wales and the best measures to limit their impact.

Polymerase Chain Reaction (PCR) and Agarose gel electrophoresis

Scientists delve into rising incidence of mycobacteriosis on Norwegian salmon farms

Cases of mycobacteriosis, a serious disease affecting Atlantic salmon predominantly related to Mycobacterium salmoniphilum infections, appear to be on the increase in Norway.

FHFweb_Cages SeaLice_

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.

FHFweb_NovelSampling_

Novel sampling reveals microbial changes during gill disease on Irish salmon farm

A non-lethal sampling method combined with cutting-edge molecular analysis has shed new light on microbial interactions in Atlantic salmon gills during a gill disease outbreak.

FHFweb_Nofima Moritella Salmon_

Vaccine study offers new insight on Norway’s winter ulcer problem

In recent years, the Norwegian aquaculture industry has struggled against the rise of “variant” forms of Moritella viscosa, a bacterium which causes the disease winter ulcer in Atlantic salmon. This has led to concerns about the efficacy of existing vaccines against the pathogen.

FHFweb_jellyfish_sr cr

Tackling jellyfish blooms affecting farmed fish in the British Isles

Tiny jellyfish have contributed to cases of gill disease in farmed Atlantic salmon in Scotland and Ireland in the past year, but early recognition and maintaining good general gill health are key to reducing the threat.

FHFweb_SRSIreland FelixScholz_

Race to control bacterial disease which threatens Irish salmon production

The bacterium Piscirickettsia salmonis, which causes the disease salmonid rickettsial septicemia (SRS) in Atlantic salmon, is becoming an increasing concern on fish farms in Ireland.