Project number: 1994-085
Project Status:
Completed
Budget expenditure: $193,515.00
Principal Investigator: John K. Volkman
Organisation: CSIRO Oceans and Atmosphere Hobart
Project start/end date: 20 Jul 1994 - 16 May 2001
Contact:
FRDC

Objectives

1. Determine baseline lipid class, essential fatty acid and sterol composition data of the local abalone (from the wild)
2. Examine the amounts and proportions of nutritionally important lipid components of the abalone diet through growth rate bioassays. The feasibility of using radioactivity-labelled precursors will be examined as a means of examining uptake and possible bioconversion into biochemically-important compounds
3. Determine is suitable supplements are required by determining assimilation rates and digestibility values of the lipid components oin fish oil based diets (which have compositions different to natural feeds) for abalone. Identify the fish oil, oil blend or modified oil which demonstrates the highest growth rates in abalone within economic constraints.

Final report

ISBN: 0-643-06230-0
Author: Graeme A. Dunstan John K. Volkman Greg B. Maguire
Final Report • 2001-05-09 • 784.33 KB
1994-085-DLD.pdf

Summary

Lipids and in particular polyunsaturated fatty acids (PUFA) are important for a number of physiological functions in animals.  PUFA are also major components of cellular membranes.  Many marine animals cannot synthesise "essential" PUFA de novo and therefore serious deficiency signs such as low growth rates, reduced survival, low fecundity and lowered disease resistance can occur if sufficient amounts of these fatty acids are not supplied in the diet.  

The main focus of this research was to determine the requirement of abalone for PUFA for optimal muscle growth and the appropriateness of alternative lipids as sources of essential PUFA.  None of this work had been performed for abalone previously.

Keywords: Abalone, Diet, Formulated diets, Lipids, Nutritional requirements, Polyunsaturated fatty acids, Sterols

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