Enrichment of functional selenium in farmed African catfish (Clarias goriepinus) by dietary modulation

Joop Luten; Edward Schram

Enrichment of functional selenium in farmed African catfish (Clarias goriepinus) by dietary modulation

In: Seafood research from fish to dish

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Joop Luten

Joop Luten Fiskeriforskning, PO Box 6122, N-9291 Tromsø, Norway

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Edward Schram

Edward Schram Institute for Manne Resources & Ecosystem Studies (Wageningen IMARES), PO Box 68, 1970 AB IJmuiden The Netherlands

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Type:: Chapter

Pages:: 193–200

DOI:: https://doi.org/10.1163/9789086865819_019

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Abstract

An important trace element to human and animal health concern is selenium. Fish is one of the main sources for selenium in the diet of humans. Enrichment of selenium in farmed fish gives opportunities to produce tailor-made seafood with functional selenium. The form of selenium in the diet of farmed fish may influence the final concentration in the edible part of fish as well it biological activity. A few studies with African catfish (Clarias goriepinus) given a selenium enriched diet were carried out African catfish was fed with a selenomethionine or with garlic enriched in organoselenium during a period of six weeks. The selenium dose in the feed varied between the normal dose of approx. 1 mg selenium/kg to 8 mg selenium/kg feed. Besides, the effect of methionine concentration in the feed on the incorporation of selenomethionine in the muscle tissue of African catfish was studied. It was shown that African catfish growth was not affected by the dietary selenium level. The selenium content in the edible part of the African catfish increased linearly with increasing dietary selenium levels. The increase was approx. 3 times higher using selenomethionine in the feed then with the organoselenium compounds from selenium enriched garlic supplemented to the feed.

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Seafood research from fish to dish

Quality, safety and processing of wild and farmed seafood

E-Book ISBN:: 9789086865819

Publisher:: Wageningen Academic

Print Publication Date:: 01 Jan 2006

Subjects
- Life Sciences

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Enrichment of functional selenium in farmed African catfish (Clarias goriepinus) by dietary modulation

Abstract

Citation Info

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Seafood research from fish to dish

Quality, safety and processing of wild and farmed seafood

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