Acronym APREMIA
Category
Aquaculture
Title Apparent availability and requirements of microminerals in salmon Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National
Coordinator institution
NIFES - National Institute of Nutrition and Seafood Research (Norway)
Institutions involved
KLC - King's College London (United Kingdom) ,
Start year 2015 End year 2019 Funding (€) € 1,327,430 Website https://prosjektbanken.forskningsradet.no/en/project/FORISS/244490?Kilde=FORISS&distribution=Ar&chart=bar&calcType=funding&Sprak=no&sortBy=date&sortOrder=desc&resultCount=30&offset=30&ProgAkt.3=HAVBRUKS-Havbruk+-+en+n%C3%A6ring+i+vekst Summary Due to increasing inclusion of vegetable ingredients in salmon feeds, new challenges have arisen with regards to minerals. Substitution of marine feed ingredients alters the level and total composition of minerals. Substitution of marine feed ingredients with plant ingredients will also lower the bioavailability of already supplemented minerals due to the presence of plant fibers and phytate. The lower mineral bioavailability in novel aquafeeds will both affect essential elements required for fish health and robustness, but also increase the environmental load by increased loss via the faeces.High supplementation of several minerals to fish feeds today, merely based on precautions, has further challenges in that the minerals added to the feed may interact with each other both on intestinal uptake and biological function. Furthermore, the chemical form (e.g. inorganic or organic forms)of supplemented minerals has been suggested to alter the bioavailability. The route of uptake and tissue distribution for chemical forms has, however not been demonstrated in fish. Challenges to assess mineral requirements in the Atlantic salmon relates to chemical forms in feed ingredients and complete diets, interacting factors that negatively influence digestibility, uptake, tissue distribution and functional status of the individual minerals, as well as farming conditions that may elevate the requirements.
The activity in the project is divided into three work packages: 1) we aim to develop a chemical speciation method of selected minerals to predict mineral digestibility depending on mineral chemical species. 2)We will apply rapid in situ and in vitro methods to assess intestinal mineral uptake with combined factors that can affect bioavailability. 3) Based on the digestibility and availability studies, we want to establish safe lower requirement levels of Zn,Mn and Se to support growth performance and robustness in farmed Atlantic salmon fed future environmentally friendly feeds.
Keywords
Salmon;
Diets;
Fish;
Feed composition;
Fish meal replacement;
Fish health;
Marine Region
76
Not associated to marine areas
0
Marine Region Map
