| Captivity diets alter egg yolk lipids of a bird of prey (the American kestrel) and of a galliforme (the red-legged partridge). | |
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MedLine Citation:
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PMID: 11247734 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The salient feature of the fatty acid profile of kestrel eggs collected in the wild was the very high proportion of arachidonic acid (15.2%+/-0.7% of fatty acid mass, n=5) in the phospholipid fraction of the yolk. Kestrels in captivity fed on day-old chickens produced eggs that differed from those of the wild birds in a number of compositional features: the proportion of linoleic acid was increased in all the lipid fractions; the proportion of arachidonic acid was increased in yolk phospholipid and cholesteryl ester; the proportion of alpha-linolenic acid was decreased in all lipid classes, and that of docosahexaenoic acid was decreased in phospholipid and cholesteryl ester. Partridge eggs from the wild contained linoleic acid as the main polyunsaturate of all the yolk lipid fractions. Captive partridges maintained on a formulated diet very rich in linoleic acid produced eggs with increased levels of linoleic, arachidonic, and n-6 docosapentaenoic acids in the phospholipid fraction; reduced proportions of alpha-linolenic acid were observed in all lipid classes, and the proportion of docosahexaenoic acid was markedly reduced in the phospholipid fraction. Thus, captive breeding of both the kestrel and the partridge increases the n-6/n-3 polyunsaturate ratio of the yolk lipids. |
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Authors:
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P F Surai; B K Speake; G R Bortolotti; J J Negro |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Physiological and biochemical zoology : PBZ Volume: 74 ISSN: 1522-2152 ISO Abbreviation: Physiol. Biochem. Zool. Publication Date: 2001 Mar-Apr |
Date Detail:
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Created Date: 2001-03-15 Completed Date: 2001-06-28 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 100883369 Medline TA: Physiol Biochem Zool Country: United States |
Other Details:
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Languages: eng Pagination: 153-60 Citation Subset: IM |
Affiliation:
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Avian Science Research Centre, Scottish Agricultural College, Auchincruive, Ayr KA6 5HW, United Kingdom. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed* Animal Husbandry Animals Animals, Domestic / metabolism Animals, Wild / metabolism Animals, Zoo / metabolism Birds / metabolism* Egg Yolk / chemistry* Fatty Acids / chemistry Lipids / analysis* Raptors / metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids; 0/Lipids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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