By-prod­ucts could add more value

Fish Farmer - - News -

THE Scot­tish salmon farm­ing in­dus­try could make bet­ter use of by-prod­ucts, adding 5.5 per cent value to the sec­tor, re­searchers have found.

Though gen­er­ally well utilised, to­tal by-prod­uct value out­put could be im­proved by 803 per cent (£23.7 mil­lion), based on 2015 fig­ures, ac­cord­ing to a re­cent study.

Led by Julien Stevens, re- searchers from the Univer­sity of Stir­ling’s In­sti­tute of Aqua­cul­ture and Univer­sity of Mas­sachusetts, Bos­ton, have pub­lished re­search funded by IFFO, the Marine In­gre­di­ents Or­gan­i­sa­tion.

The re­search in­ves­ti­gated how value could be added to aqua­cul­ture through bet­ter util­i­sa­tion of by-prod­ucts, by max­imis­ing ed­i­ble yields and bet­ter sep­a­ra­tion at the pro­cess­ing stage, look­ing at the Scot­tish salmon farm­ing in­dus­try as a case study.

By ex­ploit­ing all high value by-prod­uct types (heads, frames, trim­mings and belly flaps) for ex­ist­ing do­mes­tic and ex­port food mar­kets, the au­thors demon­strated the po­ten­tial to add 5.5 per cent value to the salmon in­dus­try.

Di­rect­ing 77 per cent of the an­nual whole fish pro­duc­tion to­wards hu­man con­sump­tion re­sults in 132,171 tonnes of food.

The re­main­ing by-prod­ucts can then be utilised in the pro­duc­tion of fish­meal and fish oil, and sub­se­quently used in aquafeed for farm raised marine species.

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