Use an alternative protein source: yeast

Overall effectiveness category Awaiting assessment
Number of studies: 1
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Key messages

One replicated, controlled experiment in Norway found no differences in weight between Atlantic salmon that were fed diets containing the yeast Yarrowia lipolytica compared to a control diet containing fishmeal.

About key messages

Key messages provide a descriptive index to studies we have found that test this intervention.

Studies are not directly comparable or of equal value. When making decisions based on this evidence, you should consider factors such as study size, study design, reported metrics and relevance of the study to your situation, rather than simply counting the number of studies that support a particular interpretation.

Supporting evidence from individual studies

A replicated, controlled experiment in Norway (Hatlen et al., 2012) found no differences in weight between Atlantic salmon that were fed diets containing a heat killed dried yeast biomass from the yeast Yarrowia lipolytica or a control diet. The average fish weight increased from 179 to 419g across all groups during the experiment. Three experimental diets containing the yeast were fed to groups of Atlantic salmon and included a heat killed dried yeast biomass containing 6% eicosapentaenoic acid and 20% oil. The yeast biomass was included at three dietary levels; 10%, 20% and 30% of the diet. Another group was fed a control diet containing fishmeal, wheat gluten, rapeseed oil and wheat meal. Fish were kept in tanks containing 50 fish under continuous light and fed with automatic feeders. Fish were counted and bulk weighed at the start of the experiment, and after 27 days, 56 days and 95 days of feeding the experimental diets.
Study and other actions tested
Referenced paper
Hatlen B., Berge G.M., Odom J.M., Mundheim H. & Ruyter B. (2012) Growth performance, feed utilisation and fatty acid deposition in Atlantic salmon, Salmo salar L., fed graded levels of high-lipid/high-EPA Yarrowia lipolytica biomass. Aquaculture, 364-365, 39-47.

Please cite as:

Jones, A.C., Mead, A., Austen, M.C.V. & Kaiser, M.J. (2013) Aquaculture: Evidence for the effects of interventions to enhance the sustainability of aquaculture using Atlantic salmon (Salmo salar) as a case study. Bangor University

Where has this evidence come from?

List of journals searched by synopsis

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This Action forms part of the Action Synopsis:

Sustainable Aquaculture

Related Actions

Actions	Effectiveness	Studies	Category
Reduce fish meal in diet Action Link	Awaiting assessment	2	Synopsis Link
Use an alternative oil source: plant-based Action Link	Awaiting assessment	10	Synopsis Link
Use an alternative protein source: animal Action Link	Awaiting assessment	2	Synopsis Link