2017
Comparing Selected vs. Non-selected Rainbow Trout to Elucidate Resistance to Soybean Meal (SBM) Caused Distal Enteritis
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Contributor/Checkoff:
Soy Aquaculture Alliance
Category:
Export/Trade
Keywords:
Aquaculture
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Madison (Matt) Powell, University of Idaho
Co-Principal Investigators:
Project Code:
1730-352-0506
Contributing Organization (Checkoff):
United Soybean Board
$68,755
Institution Funded:
University of Idaho
$68,755
Brief Project Summary:

This project identified a new way to potentially select fish for increased oral tolerance of soybean meal and showed that straightforward qPCR techniques can be used effectively to assess selection potential, such as marker-assisted selection. The project evaluated specific genes in fish selected for growth on a complete plant-based diet over several generations. The principal investigators sought to determine differences in growth and intestinal health when fish were fed a 40% soybean meal diet. Specifically, the liver and distal intestine were examined for gene expression analysis. At 3 months of age, the fish showed superior growth on the diet.

Key Audience:
Aquaculture feed producers, aquaculture nutritionists, rainbow trout producers

Information And Results
Project Deliverables

The impacts of soybean meal (SBM) on fish performance are quite variable. In rainbow trout, the first adverse effects of soybean intolerance manifests in higher food conversion ratios. In figure 1, significantly higher FCRs were observed in the non-selected fish on the 40% SBM diet after 12 weeks indicating clinically identifiable enteritis which is confirmed through histology.

Final Project Results

Updated February 17, 2021:
In summary, this project identified a new way to potentially select fish for increased oral tolerance of soybean meal and showed that straightforward qPCR techniques can be used effectively to assess selection potential (i.e. marker-assisted selection).

View uploaded report Word file

View uploaded report 2 PDF file

In summary, this project identified a new way to potentially select fish for increased oral tolerance of soybean meal and showed that straightforward qPCR techniques can be used effectively to assess selection potential (i.e. marker-assisted selection).

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.