Document Detail

Effects of dietary soybean protein levels on metabolic response of the southern catfish, Silurus meridionalis.
MedLine Citation:
PMID:  16527505     Owner:  NLM     Status:  MEDLINE    
A closed respirometer was used to measure oxygen consumption of the southern catfish Silurus meridionalis fed with six isonitrogenous (48% crude protein) diets replacing 0%, 13%, 26%, 39%, 52% and 65% fish meal (FM) protein by soybean meal (SBM) protein, in order to investigate the effects of dietary soybean protein level (SPL) (replacing FM) on metabolic rates of the southern catfish. The results showed that there were no significant differences in routine metabolism among dietary treatments. Either the total metabolic rate or specific dynamic action (SDA) was positively correlated with assimilated food energy at each diet, respectively (P<0.05). The SDA coefficient (means the energy spent in metabolism per unit of assimilated dietary energy) significantly increased with increasing dietary SPL (P<0.05). Fish fed the diet with 13% SPL had a significantly lower SDA coefficient (0.1528) than fish fed the diet with 52% or 65% SPL (0.1826 or 0.1932) (P<0.05). However, there were no significant differences in SDA coefficient among fish fed the diets with 13%, 26% and 39% SPL (P>0.05). Results of the present study suggested that an imbalance of essential amino acids at higher dietary SPL resulted in more energy channeled into metabolism, and subsequently increased the SDA coefficient.
Qinghui Ai; Xiaojun Xie
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-03-09
Journal Detail:
Title:  Comparative biochemistry and physiology. Part A, Molecular & integrative physiology     Volume:  144     ISSN:  1095-6433     ISO Abbreviation:  Comp. Biochem. Physiol., Part A Mol. Integr. Physiol.     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-05-09     Completed Date:  2006-08-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9806096     Medline TA:  Comp Biochem Physiol A Mol Integr Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  41-7     Citation Subset:  IM    
Institute of Fisheries Science, Southwest China Normal University, Chongqing 400715, PR China.
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MeSH Terms
Animal Feed* / analysis,  standards
Animal Nutritional Physiological Phenomena
Catfishes / growth & development,  metabolism*
Soybean Proteins / chemistry,  metabolism*
Species Specificity
Reg. No./Substance:
0/Soybean Proteins

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