Document Detail

A mixture of cottonseed meal, soybean meal and animal byproduct mixture as a fish meal substitute: growth and tissue gossypol enantiomer in juvenile rainbow trout (Oncorhynchus mykiss).
MedLine Citation:
PMID:  15379906     Owner:  NLM     Status:  MEDLINE    
Diets incorporating three different sources of extracted cottonseed meal (CM), soybean meal and an animal protein mixture were evaluated for juvenile rainbow trout. Fish averaging 0.96 g were divided into groups of 30; 3 groups per treatment, and each group was fed one of four diets for a 16-week period. Fish meal (FM) was replaced on a 25% protein basis by each of three different sources of CM from California (CA), Tennessee (TN), and Arkansas (AR), U.S.A. In the three CM-containing diets another 25% soybean meal protein and 50% animal protein mixture were also incorporated to completely replace FM protein. The results of growth rate and feed utilization showed that FM could be entirely replaced by a mixture of plant proteins (CM and soybean meal) and animal by-product proteins. Hematocrit levels were significantly lower in the group fed CM-containing diets than in the control. The findings suggest that CM can be used as a good protein source by the incorporation of at least 15% in diets (25% of fish meal protein replacement), and that the nutritive values of CM in juvenile trout can be different due to their different origin. Significantly higher concentrations of total gossypol were found in faeces of CM-TN (5.8 +/- 0.4 micromol/g) and CM-AR (5.6 +/- 0.6) groups than in that of CM-CA (3.7 +/- 0.4) group. It was documented that gossypol enantiomers, present in an equal proportion in diets, selectively accumulated in liver and bile, whereas equal proportions of (+)- and (-)-enantiomers were found in whole-body and faeces. Depending on CM source, fish can absorb approximately 35-50% of dietary gossypol, and the majority of the absorbed gossypol seemed to be excreted.
K-J Lee; K Dabrowski; J H Blom; S C Bai; P C Stromberg
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of animal physiology and animal nutrition     Volume:  86     ISSN:  0931-2439     ISO Abbreviation:  J Anim Physiol Anim Nutr (Berl)     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2004-09-21     Completed Date:  2004-10-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101126979     Medline TA:  J Anim Physiol Anim Nutr (Berl)     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  201-13     Citation Subset:  IM    
School of Natural Resources, The Ohio State University, Columbus 43210, USA.
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MeSH Terms
Animal Feed / analysis*
Animal Nutritional Physiological Phenomena*
Cottonseed Oil
Dietary Proteins / administration & dosage*,  metabolism
Feces / chemistry
Gossypol / administration & dosage,  metabolism*,  pharmacokinetics
Intestinal Absorption
Nutritive Value
Oncorhynchus mykiss / growth & development*,  metabolism
Random Allocation
Reg. No./Substance:
0/Cottonseed Oil; 0/Dietary Proteins; 303-45-7/Gossypol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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