Fish Farmer

Stirling explores feed factor in sea lice fight

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A NEW £300,000 study involving Stirling’s Institute of Aquacultur­e (IoA) and a leading animal feed manufactur­er will explore how feed ingredient­s can reduce infections in farmed fish.

Led by Dr Armin Sturm, a senior lecturer at the Institute and a sea lice expert, the research could reduce the need for anti-parasite treatments in aquacultur­e.

If effective, such feed ingredient­s could add to the growing arsenal of non-medicinal control strategies currently employed to tackle sea lice infections, said the university in a press release.

The IoA is working with Devon based Denis Brinicombe Group, which makes feed products for the ruminant and equestrian markets, on the three-year project.

Dr Sturm 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. 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. 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.

 ??  ?? Above: Dr Armin Sturm
Above: Dr Armin Sturm

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