Incorporation of n-3 in muscular tissue of Nile tilapia fed with shrimp head silage/Incorporacao de omega-3 no tecido muscular da tilapia do Nilo alimentada com dietas contendo silagem de cabeca de camarao

The aim of the present study was to assess the effect of diets supplemented with shrimp-head silage on the incorporation of n-3 in the Nile tilapia fillets. EPA (eicosapentaenoic), DHA (docosahexanoic) and total lipids were determined by chromatography in feeds and the muscles of tilapia specimens w...

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Bibliographic Details
Published in:Ciência rural 2012-01, Vol.42 (1), p.172
Main Authors: Costa, Carolina Nunes, da Silva, Jaff Ribeiro, de Melo, Fulvio Viegas Teixeira, Hisano, Hamilton, Druzian, Janice Izabel, Portz, Leandro
Format: Article
Language:Spanish
Subjects:
Chromatography
Fatty acids
Silage
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Summary:The aim of the present study was to assess the effect of diets supplemented with shrimp-head silage on the incorporation of n-3 in the Nile tilapia fillets. EPA (eicosapentaenoic), DHA (docosahexanoic) and total lipids were determined by chromatography in feeds and the muscles of tilapia specimens were submitted to diets supplemented with a varying degree of silage (0, 4, 8, 12, 16%). The total lipid content ranged from 6.70 to 10.30% in the diets and from 0.79 to 1.37% in the tilapia fillets. In diet with high concentration of silage, it was observed an increase in the level of omega-3 (r=0.92). There was an incorporation of 0.59% (1.34mg 100g[g.sup.-1]) and 9.5% (40.50mg 100[g.sup.-1]) of EPA and DHA, respectively, when the addition of silage to the diet was 16%. The results implication states that the inclusion of 16% of the shrimp head silage in the diet for tilapias increases the levels of incorporation of EPA and DHA in the filet.
ISSN:0103-8478
1678-4596