| Effects of dietary selenomethionine on cutthroat trout (Oncorhynchus clarki bouvieri) growth and reproductive performance over a life cycle. | |
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MedLine Citation:
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PMID: 19763677 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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A 2.5-year feeding trial was conducted in which cutthroat trout (Oncorhynchus clarki bouvieri) were fed either a basal diet (1.2 microg Se/g diet) or the basal diet supplemented with 2, 4, 6, 8, or 10 microg selenomethionine/g diet from 1 g weight to maturation. After 44 weeks of feeding, a subsample of fish was removed from dietary treatment groups and fed the basal diet for an additional 32 weeks. Concentrations of Se in whole fish and eggs increased in proportion to dietary Se intake, but no differences in growth, feed intake, survival, or egg hatchability were observed among dietary groups. Cranial-facial deformities in second-generation offspring were less than 6% in all treatment groups except for fish fed the diet supplemented with 4 microg selenomethionine/kg, for which a 9.2% incidence was observed. Fish switched from selenomethionine-supplemented diets to the basal diet lost Se, calculated as microg Se lost/g weight gain, at 1.01, 2.84, 4.42, and 4.42 for dietary treatment groups 3, 4, 5, and 6, respectively. Results suggest no toxicity of dietary selenomethionine up to 10 microg/g supplemented diet and that with total life-cycle exposure, cutthroat trout increase Se excretion to maintain whole-body concentrations below toxic levels. |
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Authors:
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Ronald W Hardy; Libbie L Oram; Gregory Möller |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Archives of environmental contamination and toxicology Volume: 58 ISSN: 1432-0703 ISO Abbreviation: Arch. Environ. Contam. Toxicol. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-01-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0357245 Medline TA: Arch Environ Contam Toxicol Country: United States |
Other Details:
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Languages: eng Pagination: 237-45 Citation Subset: IM |
Affiliation:
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Aquaculture Research Institute, University of Idaho, 3059F National Fish Hatchery Road, Hagerman, ID 83332, USA. rhardy@uidaho.edu |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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