Wild fish consumption can balance nutrient retention in farmed fish.
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Willer, David F https://orcid.org/0000-0002-9010-8503
Newton, Richard https://orcid.org/0000-0003-1481-995X
Malcorps, Wesley https://orcid.org/0000-0002-5651-0881
Kok, Bjorn https://orcid.org/0000-0002-7211-1442
Little, David https://orcid.org/0000-0002-6095-3191
Abstract
Wild fish used as aquafeeds could be redirected towards human consumption to support sustainable marine resource use. Here we use mass-balance fish-in/fish-out ratio approaches to assess nutrient retention in salmon farming and identify scenarios that provide more nutrient-rich food to people. Using data on Norway's salmon farms, our study revealed that six of nine dietary nutrients had higher yields in wild fish used for feeds, such as anchovies and mackerel, than in farmed salmon production. Reallocating one-third of food-grade wild feed fish towards direct human consumption would increase seafood production, while also retaining by-products for use as aquafeeds, thus maximizing nutrient utilization of marine resources.
Description
Keywords
30 Agricultural, Veterinary and Food Sciences, 3005 Fisheries Sciences, Foodborne Illness, Nutrition, 2 Zero Hunger
Journal Title
Nat Food
Conference Name
Journal ISSN
2662-1355
2662-1355
2662-1355
Volume Title
Publisher
Springer Science and Business Media LLC
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Sponsorship
D.F.W. was funded by a Henslow Fellowship at Murray Edwards College, University of Cambridge. J.P.W.R was funded by a Royal Society University Research Fellowship and a Leverhulme Trust Early Career Fellowship. The research of A.L. and B.d.R is supported by the Scottish Government’s Rural and Environmental Science and Analytical Services Division (RESAS). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.