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This antiparasitic technology has been used for several years with good success in large animals reducing medicated dependence

Research project explores feed's role in farmed fish parasite control

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Monday, September 16, 2019, 22:50 (GMT + 9)

A new GBP 300,000 study involving University of Stirling experts and a leading animal feed manufacturer is aiming to explore how certain feed ingredients can reduce infections in farmed fish.

Stirling’s Institute of Aquaculture (IoA) is working with the Devon-based Denis Brinicombe Group – which manufactures feed products for the ruminant and equestrian markets – on the three-year project.

The research could reduce the need for anti-parasite treatments in aquaculture, particularly those used in sea lice control. If effective, such feed ingredients could add to the growing arsenal of non-medicinal control strategies currently employed to tackle sea lice infections.

Denis Brinicombe Group feed plant 

Principal Investigator, Dr Armin Sturm, Senior Lecturer at the IoA, said: “I am very excited about this project, which will allow us to assess the effectiveness of specific feed ingredients in preventing sea lice infections. While some of the veterinary drugs used to control sea lice can affect other marine organisms and may accumulate in marine sediments, the novel product tested here is non-toxic and short-lived in the environment.”

The team will test the theory that modified aquaculture diets that include Brinicombe’s patented bioactive compound premix – derived from natural feed sources – will have a positive impact on the health of farmed fish by reducing infection rates, survival and reproductive output of sea lice.

Dr Armin Sturm, of the Institute of Aquaculture at Stirling, will lead the new study in collaboration with the Denis Brinicombe Group

Sea lice infections can adversely affect farmed fish performance by reducing appetite and growth, and compromising the animal’s immune responses, potentially leading to secondary infections. Sea lice infections thus have an adverse effect on productivity and animal welfare and may also lead to wider environmental impacts.



Dr Sturm will work alongside a wider IoA team, including Professor James Bron and Professor Brett Glencross, on the project.

They believe that their work will help combat resistance to existing salmon delousing treatments and that developments in the use of novel feed ingredients could substantially improve aquatic animal health and reduce dependence upon medicinal and other non-medicinal treatments.


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