The use of silages prepared from fish neural tissues as enrichers for rotifers ( Brachionus plicatilis ) and Artemia in the nutrition of larval marine fish
Identifieur interne : 001250 ( Istex/Corpus ); précédent : 001249; suivant : 001251The use of silages prepared from fish neural tissues as enrichers for rotifers ( Brachionus plicatilis ) and Artemia in the nutrition of larval marine fish
Auteurs : Douglas R. Tocher ; Gabriel Mourente ; John R. SargentSource :
- Aquaculture [ 0044-8486 ] ; 1997.
Abstract
Marine fish larvae have a requirement for large quantities of n − 3 highly unsaturated fatty acids (HUFA), particularly docosahexaenoic acid (DHA; 22:6n − 3), and dietary deficiencies of these induce a range of pathologies in fish including behavioural abnormalities. Therefore, there is a growing demand for natural lipids highly enriched in DHA as nutritional supplements during larval development. In the present study, DHA-rich products were obtained from fish neural tissues by a procedure involving ensiling in organic acids followed by neutralisation, drying, milling and sieving to produce the final paniculate, crumbed products. Lipid content varied in the neural tissue silages from 5.5% to 46.5% but all lipid contained high percentages of DHA and high DHA:EPA (eicosapentaenoic acid; 20:5n − 3) ratios ranging from 3.5 to 5.4. Tuna eye silage was a high lipid, high triacylglycerol (90.6% of total lipid) product and was particularly effective in increasing DHA content, outperforming a commercial product, in rotifer (Brachionus plicatilis) enrichment. Cod brain/eye silage had an intermediate content (18.2%) of lipid, which contained almost 50% as phospholipid, and proved as effective as a commercial enricher in increasing DHA content in Artemia nauplii. Moreover, Artemia nauplii, enriched with the cod brain/eye silage were more effective than nauplii enriched with a commercial enricher in increasing the DHA content of larval turbot brain. In conclusion, tuna eye and cod brain/eye silages are useful as enrichers of Artemia nauplii and rotifers for feeding marine fish larvae prior to weaning onto pelleted formulated diets.
Url:
DOI: 10.1016/S0044-8486(96)01396-8
Links to Exploration step
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<front><div type="abstract" xml:lang="en">Marine fish larvae have a requirement for large quantities of n − 3 highly unsaturated fatty acids (HUFA), particularly docosahexaenoic acid (DHA; 22:6n − 3), and dietary deficiencies of these induce a range of pathologies in fish including behavioural abnormalities. Therefore, there is a growing demand for natural lipids highly enriched in DHA as nutritional supplements during larval development. In the present study, DHA-rich products were obtained from fish neural tissues by a procedure involving ensiling in organic acids followed by neutralisation, drying, milling and sieving to produce the final paniculate, crumbed products. Lipid content varied in the neural tissue silages from 5.5% to 46.5% but all lipid contained high percentages of DHA and high DHA:EPA (eicosapentaenoic acid; 20:5n − 3) ratios ranging from 3.5 to 5.4. Tuna eye silage was a high lipid, high triacylglycerol (90.6% of total lipid) product and was particularly effective in increasing DHA content, outperforming a commercial product, in rotifer (Brachionus plicatilis) enrichment. Cod brain/eye silage had an intermediate content (18.2%) of lipid, which contained almost 50% as phospholipid, and proved as effective as a commercial enricher in increasing DHA content in Artemia nauplii. Moreover, Artemia nauplii, enriched with the cod brain/eye silage were more effective than nauplii enriched with a commercial enricher in increasing the DHA content of larval turbot brain. In conclusion, tuna eye and cod brain/eye silages are useful as enrichers of Artemia nauplii and rotifers for feeding marine fish larvae prior to weaning onto pelleted formulated diets.</div>
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<head><ce:title>The use of silages prepared from fish neural tissues as enrichers for rotifers (<ce:italic>Brachionus plicatilis</ce:italic>
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<ce:author><ce:given-name>Gabriel</ce:given-name>
<ce:surname>Mourente</ce:surname>
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<ce:author><ce:given-name>John R.</ce:given-name>
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<ce:abstract-sec><ce:simple-para>Marine fish larvae have a requirement for large quantities of <ce:italic>n</ce:italic>
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) enrichment. Cod brain/eye silage had an intermediate content (18.2%) of lipid, which contained almost 50% as phospholipid, and proved as effective as a commercial enricher in increasing DHA content in <ce:italic>Artemia</ce:italic>
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nauplii and rotifers for feeding marine fish larvae prior to weaning onto pelleted formulated diets.</ce:simple-para>
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<ce:keywords><ce:section-title>Keywords</ce:section-title>
<ce:keyword><ce:text><ce:italic>Artemia</ce:italic>
</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Rotifers</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Docosahexaenoic acid</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Lipids</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Silage</ce:text>
</ce:keyword>
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<affiliation>E-mail: drtl@uk.ac.stir.forth</affiliation>
<affiliation>NERC Unit of Aquatic Biochemistry, Department of Biological and Molecular Sciences, University of Stirling, Stirling, FK9 4LA, UK</affiliation>
<description>Corresponding author. Tel.: 44 1786 467821; fax: 44 1786 464994.</description>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Gabriel</namePart>
<namePart type="family">Mourente</namePart>
<affiliation>Departmento de Biologia, Facultad de Ciencias del Mar, Universidad de Cadiz, Poligono Rio San Pedro, Apartado 40, 11510-Puerto Real, Cadiz, Spain</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">John R.</namePart>
<namePart type="family">Sargent</namePart>
<affiliation>NERC Unit of Aquatic Biochemistry, Department of Biological and Molecular Sciences, University of Stirling, Stirling, FK9 4LA, UK</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<typeOfResource>text</typeOfResource>
<genre type="research-article" displayLabel="Full-length article"></genre>
<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">1997</dateIssued>
<copyrightDate encoding="w3cdtf">1997</copyrightDate>
</originInfo>
<language><languageTerm type="code" authority="iso639-2b">eng</languageTerm>
<languageTerm type="code" authority="rfc3066">en</languageTerm>
</language>
<physicalDescription><internetMediaType>text/html</internetMediaType>
</physicalDescription>
<abstract lang="en">Marine fish larvae have a requirement for large quantities of n − 3 highly unsaturated fatty acids (HUFA), particularly docosahexaenoic acid (DHA; 22:6n − 3), and dietary deficiencies of these induce a range of pathologies in fish including behavioural abnormalities. Therefore, there is a growing demand for natural lipids highly enriched in DHA as nutritional supplements during larval development. In the present study, DHA-rich products were obtained from fish neural tissues by a procedure involving ensiling in organic acids followed by neutralisation, drying, milling and sieving to produce the final paniculate, crumbed products. Lipid content varied in the neural tissue silages from 5.5% to 46.5% but all lipid contained high percentages of DHA and high DHA:EPA (eicosapentaenoic acid; 20:5n − 3) ratios ranging from 3.5 to 5.4. Tuna eye silage was a high lipid, high triacylglycerol (90.6% of total lipid) product and was particularly effective in increasing DHA content, outperforming a commercial product, in rotifer (Brachionus plicatilis) enrichment. Cod brain/eye silage had an intermediate content (18.2%) of lipid, which contained almost 50% as phospholipid, and proved as effective as a commercial enricher in increasing DHA content in Artemia nauplii. Moreover, Artemia nauplii, enriched with the cod brain/eye silage were more effective than nauplii enriched with a commercial enricher in increasing the DHA content of larval turbot brain. In conclusion, tuna eye and cod brain/eye silages are useful as enrichers of Artemia nauplii and rotifers for feeding marine fish larvae prior to weaning onto pelleted formulated diets.</abstract>
<subject><genre>article-category</genre>
<topic>Nutrition</topic>
</subject>
<subject><genre>Keywords</genre>
<topic>Artemia</topic>
<topic>Rotifers</topic>
<topic>Docosahexaenoic acid</topic>
<topic>Lipids</topic>
<topic>Silage</topic>
<topic>Enrichment</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Aquaculture</title>
</titleInfo>
<titleInfo type="abbreviated"><title>AQUA</title>
</titleInfo>
<genre type="journal">journal</genre>
<originInfo><dateIssued encoding="w3cdtf">19970115</dateIssued>
</originInfo>
<identifier type="ISSN">0044-8486</identifier>
<identifier type="PII">S0044-8486(00)X0040-3</identifier>
<part><date>19970115</date>
<detail type="volume"><number>148</number>
<caption>vol.</caption>
</detail>
<detail type="issue"><number>2–3</number>
<caption>no.</caption>
</detail>
<extent unit="issue pages"><start>77</start>
<end>264</end>
</extent>
<extent unit="pages"><start>213</start>
<end>231</end>
</extent>
</part>
</relatedItem>
<identifier type="istex">D3489C25DE01BAD2CCF9F24A72DA0E71B135153A</identifier>
<identifier type="DOI">10.1016/S0044-8486(96)01396-8</identifier>
<identifier type="PII">S0044-8486(96)01396-8</identifier>
<recordInfo><recordContentSource>ELSEVIER</recordContentSource>
</recordInfo>
</mods>
</metadata>
</istex>
</record>
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