| Postprandial gastrointestinal blood flow, oxygen consumption and heart rate in rainbow trout (Oncorhynchus mykiss). | |
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MedLine Citation:
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PMID: 18308602 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present study is the first to simultaneously and continuously measure oxygen consumption (MO(2)) and gastrointestinal blood flow (q(gi)) in fish. In addition, while it is the first to compare the effects of three isoenergetic diets on q(gi) in fish, no significant differences among diets were found for postprandial MO(2), q(gi) or heart rate (f(H)) in rainbow trout, Oncorhynchus mykiss. Postprandial q(gi), f(H) and MO(2) were significantly elevated above baseline levels by 4 h. Postprandial q(gi) peaked at 136% above baseline after 11 h, f(H) peaked at 110% above baseline after 14 h and MO(2) peaked at 96% above baseline after 27 h. Moreover, postprandial MO(2) remained significantly elevated above baseline longer than q(gi) (for 41 h and 30 h, respectively), perhaps because most of the increase in MO(2) associated with feeding is due to protein handling, a process that continues following the absorption of nutrients which is thought to be the primary reason for the elevation of q(gi). In addition to the positive relationships found between postprandial MO(2) and q(gi) and between postprandial MO(2) and f(H), we discovered a novel relationship between postprandial q(gi) and f(H). |
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Authors:
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Erika J Eliason; David A Higgs; Anthony P Farrell |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-02-05 |
Journal Detail:
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Title: Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Volume: 149 ISSN: 1531-4332 ISO Abbreviation: Comp. Biochem. Physiol., Part A Mol. Integr. Physiol. Publication Date: 2008 Apr |
Date Detail:
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Created Date: 2008-03-18 Completed Date: 2008-07-30 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9806096 Medline TA: Comp Biochem Physiol A Mol Integr Physiol Country: United States |
Other Details:
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Languages: eng Pagination: 380-8 Citation Subset: IM |
Affiliation:
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Department of Zoology, University of British Columbia, Vancouver, BC, Canada. eeliason@interchange.ubc.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animal Nutritional Physiological Phenomena Animals Cardiac Output* Diet / veterinary Digestion Gastrointestinal Tract / metabolism* Heart Rate* Intestinal Absorption Oncorhynchus mykiss / metabolism* Oxygen Consumption* Postprandial Period / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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