2016
Modified Dietary Amino Acid Balance to Increase Soy Protein Inclusion in Trout Feeds and Validation of Calprotectin as a Biomarker of SBM Induced Intestinal 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:
1640-512-5288
Contributing Organization (Checkoff):
United Soybean Board
(n/a)
Institution Funded:
University of Idaho
(n/a)
Brief Project Summary:

There was no effect of soybean meal level or amino acid supplementation level on final fish weights. Protein retention efficiency was depressed by high soy inclusion and further depressed with excessive amino acid supplementation. The study found that soybean meal is detrimental to production efficiency of rainbow trout at the 40% inclusion level in the diet. Current ideal amino acid targets may be in excess and need to be revised. There are detrimental effects to over-supplementing rainbow trout diets with amino acids. Molecular analyses of intestinal tissues and feces were able to isolate nine genes from rainbow trout.

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

Information And Results
Final Project Results

Updated February 18, 2021:

View uploaded report PDF file

View uploaded report 2 PDF file

Results of the feeding trial showed there was no effect of soybean meal level or amino acid supplementation level on final fish weights. However, FCR was higher with 40% soybean meal inclusion and there was a detrimental interaction with high soy level and high AA supplementation. Feed intake results in this study were also similar. Moreover, protein retention efficiency was depressed by high soy inclusion and further depressed with excessive AA supplementation. These results address the first objective and clearly provide three conclusions:
1. Soybean meal is detrimental to production efficiency of rainbow trout at 40% inclusion in the diet.
2. Current ideal amino acid targets may be in excess and need to be revised.
3. There are detrimental effects to over-supplementing rainbow trout diets with amino acids.

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.