Nofima reports

Rapport/Report 51/2014 - English summary

Ytrestøyl, Trine; Aas, Turid Synnøve; Hognes, Erik Skontorp; Åsgård, Torbjørn Einar

Publication details

Publisher: Nofima AS

Issue: 51/2014

Number of pages: 12

International Standard Numbers:
Printed: 978-82-8296-254-4

Open Access: green

Links:
ARKIV
FULLTEKST

This project continues the work from a previous project in 2011. An overview of the feed ingredients used in Norwegian salmon production in 2012 and how effectively the feed ingredients are utilized in the production of salmon is given. Life cycle assessment (LCA) was used to estimate the amount of freshwater and phosphorous and release of CO2 (carbon footprint) associates with the production of Norwegian farmed salmon. The result from the project are delivered as two reports, one from Nofima (Resource utilisation of Norwegian salmon farming in 2012-2013), and one from Sintef/SIK ((LCA of Norwegian salmon production 2012). Only the main results from the project will therefore be presented in this final report, and further details can be found in the two above mentioned reports that can be downloaded from FHF website (http://www.fhf.no/prosjektdetaljer/?projectNumber=900912). The content of marine ingredients in the diet was around 30 % in 2013, and the Norwegien salmon is now a net producer of marine protein. The reduction of fish oil in the feed in recent years has resulted in a reduced content of the omega 3 fatty acids EPA and DHA in the salmon. However, there is still 1.4 % EPA and DHA in the fillet, and consuming 130 g of Norwegian salmon per week is sufficient to cover the recommended minimal intake of these fatty acids. The salmon utilizes the nutrients in the feed efficiently, 27 and 24 % of the protein and energy in the feed resources were retained in the salmon fillet. The retention of omega 3 fatty acids and P in fillet was 26 and 13 % respectively. The production of 1 kg edible salmon product consumed 1.95 l of fresh water and 11 g of inorganic P and released 4 kg of CO2 equivalents in 2012. The production and transport of feed ingredients is the main driver for resource consumption and environmental impacts. 98 % of the fresh water, 57 % of the inorganic P and 95 % of the release of CO2 was related to production and transport of feed ingredients.