Assimilation of gelatin-acacia microencapsulated lipid by Pacific oyster (Crassostrea gigas) spat

J Knauer; Paul C Southgate

doi:10.1016/S0044-8486(97)00038-0

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Assimilation of gelatin-acacia microencapsulated lipid by Pacific oyster (Crassostrea gigas) spat

Journal article

Peer reviewed

Assimilation of gelatin-acacia microencapsulated lipid by Pacific oyster (Crassostrea gigas) spat

J Knauer and Paul C Southgate

Aquaculture, Vol.153(3-4), pp.291-300

1997

DOI: https://doi.org/10.1016/S0044-8486(97)00038-0

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Abstract

assimilation

microcapsule

nutrition

lipid

oyster

crassostrea gigas

Gelatin-acacia microcapsules (GAM) are commonly used as a delivery vehicle for lipids in nutritional studies with bivalves. In this study the efficiency with which lipid contained in GAM was assimilated by Pacific oyster (Crassostrea gigas) spat was determined. The marine diatom Chaetoceros muelleri was cultured in the presence of 14C-sodium bicarbonate for 24 h. The 14C-lipid fraction was extracted, mixed with corn oil and microencapsulated in GAM. Spat assimilated 14C-lipids from a mixed diet of the marine flagellate Dunaliella tertiolecta (80%) and GAM (20%) with an efficiency of 79.9±2.9%, while spat fed a 100% GAM diet assimilated 14C-lipids at a rate of 57.1±5.2%. Addition of 100 mg l-1 of the antibiotic Thimerosal to both a mixed diet and GAM only significantly reduced bacterial degradation of GAM over 24 h. The high assimilation efficiencies underline the potential of GAM as carrier of lipids in nutritional studies with bivalves.

Details

Title: Assimilation of gelatin-acacia microencapsulated lipid by Pacific oyster (Crassostrea gigas) spat
Authors: J Knauer (Author) - James Cook University
Paul C Southgate (Author) - James Cook University
Publication details: Aquaculture, Vol.153(3-4), pp.291-300
Publisher: Elsevier BV
Date published: 1997
DOI: 10.1016/S0044-8486(97)00038-0
ISSN: 0044-8486
Organisation Unit: School of Science and Engineering - Legacy; Australian Centre for Pacific Islands Research; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99449170402621
Output Type: Journal article

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