Study

The effect of dietary krill supplementation on epithelium-associated bacteria in the hindgut of Atlantic salmon (Salmo salar L.): a microbial and electron microscopical study

  • Published source details Ringø Einar, Sperstad Sigmund, Myklebust Reidar, Mayhew TerryM., Mjelde Agnar, Melle Webjørn & Olsen RolfErik (2006) The effect of dietary krill supplementation on epithelium-associated bacteria in the hindgut of Atlantic salmon (Salmo salar L.): a microbial and electron microscopical study. Aquaculture Research, 37, 1644-1653.

Actions

This study is summarised as evidence for the following.

Action Category

Use an alternative protein source: krill

Action Link
Sustainable Aquaculture
  1. Use an alternative protein source: krill

    In 2002, a replicated, controlled study in Norway (Ringø et al., 2006) found that salmon, Salmo salar, had similar final weights and feed conversion ratios when fed diets containing fish meal or fish meal and krill meal. Fish weighed an average of 105g at the start of the study and increased to 169.0g and 167.2 g in the fish meal and krill meal groups, respectively. Feed conversion ratios were 0.68 and 0.69, respectively. There was a difference in the composition and number of aerobic bacteria colonizing the hindgut of salmon between fish meal and krill meal diets (2.2 x 106 and 8.5 x 104, respectively). Salmon were fed either a diet containing fish meal as the protein source (58.9% of the diet) or a diet containing a 1:1 mix of fish meal and krill meal (64%) for 46 days. Three hundred salmon were stocked in 1.5 m3 x 1.5 m3 x 1m3 fibreglass tanks for the duration of the experiment. On day 46, fish were anaesthetized and measured for weight and feed conversion.

     

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 21

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust