Document Type
Article
Publication Version
Version of Record
Publication Date
2012
Departmental Paper Identifier
NRM-48
Keywords
Rainbow Trout, Oncorhynchus mykiss, DDGS, Diet, Alternative proteins
Abstract
Distillers dried grain with solubles (DDGS) was evaluated in juvenile Shasta-strain rainbow trout Oncorhynchus mykiss diets during a 36-day feeding trial. Two experimental diets containing either 10% or 20% DDGS with supplemented amino acids (lysine, methionine, isoleucine, and histidine) and phytase were compared to a fish meal-only control diet. Tanks of trout receiving diets containing either concentration of DDGS weighed significantly less at the end of the trial and had significantly poorer feed conversion ratios than tanks of fish being fed the fish mealonly control. There was no significant difference in individual fish length, weight, condition factor, or any fish health measurements among diet treatments. Both the hepatosomatic index and viscerosomatic index were significantly less in the fish fed 10% DDGS than those fed the control diet. Body fat was significantly greater in the fish receiving 20% DDGS compared to fish fed either of the other two diets. Fillet composition, as determined by crude protein, crude lipid, ash, and water, was not significantly different among fish reared on any of the diets. There was also no significant difference in estimated protein digestibility coefficients among fish receiving any of the diets. The results suggest that DDGS, even if supplemented with essential amino acids and phytase, will lead to decreased juvenile rainbow trout growth at dietary concentrations of at 10% or greater.
Publication Title
Open Journal of Animal Sciences
Volume
2
Issue
2
First Page
69
Last Page
77
Pages
9
Format
application/pdf
Language
en
DOI of Published Version
10.4236/ojas.2012.22011
Publisher
Scientific Research
Rights
Copyright © 2012 SciRes. Posted with permission.
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Recommended Citation
Barnes, Michael E.; Brown, Michael L.; and Rosentrater, Kurt A., "Juvenile Rainbow Trout Responses to Diets Containing Distillers Dried Grain with Solubles, Phytase, and Amino Acid Supplements" (2012). Natural Resource Management Faculty Publications. 117.
https://openprairie.sdstate.edu/nrm_pubs/117
Comments
This article was published in Open Journal of Animal Sciences (2012) 2(2): 69–77.