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An evaluation of the nutritional value of alternative lipid sources to juvenile southern rock lobster, Jasus edwardsii

Citation

Ward, LR and Carter, CG, An evaluation of the nutritional value of alternative lipid sources to juvenile southern rock lobster, Jasus edwardsii, Aquaculture, 296, (3-4) pp. 292-298. ISSN 0044-8486 (2009) [Refereed Article]

DOI: doi:10.1016/j.aquaculture.2009.08.025

Abstract

a b s t r a c t Article history: Received 13 January 2009 Received in revised form 19 August 2009 Accepted 21 August 2009 Keywords: Fish oil replacement Soybean lecithin Growth performance Spiny lobster Crustacean Jasus edwardsii Experimental lobster feeds are currently based on fish meal and fish oil formulations, and although survival and growth similar to that of lobsters fed fresh blue mussels has been achieved, varying the protein level in previous experimental feeds has not increased growth beyond that of lobsters fed natural food. This experiment assessed the growth performance of lobsters fed pelleted feeds containing constant amounts of protein, lipid and energy where the lipid was provided by a range of oil-rich ingredients (fish oil, FO; fish oil with added soybean lecithin, FOL; canola oil, CO; tuna oil, TO; mussel meal, MM; and squid meal, SQM). Feed performance was assessed by lobster growth rate, survival, final biochemical composition, nutrient retention and nutrient efficiency. Twenty tanks containing 15 post-larval lobsters each (1.50.04 g) were randomly allocated one of six test feeds in triplicate, and the two remaining tanks were fed freshly opened blue mussels (FRM) as a reference feed. Lobsters were fed daily to excess for 10 weeks. Final individual weights of whole body and digestive gland were measured, and tissue chemical composition analysed. There were no significant differences in survival (88.43.3%), or specific growth rate (1.30.1%.day−1) among the formulated feed fed lobsters, which were significantly lower than the survival (1000.0%) and SGR (2.2 0.1%.day−1) of FRM fed lobsters. The SQM fed lobsters had a significantly lower lipid efficiency ratio and lipid productivity value than lobsters fed TO, FOL and MM feeds. The digestive gland lipid content (g.100 g wet tissue−1) of lobsters fed the feeds TO (3.70.4), FO (3.50.3) and SQM (2.20.2) were significantly lower than lobsters fed feeds MM (9.91.1), FOL (9.02.3) and FRM fed lobsters contained most digestive gland lipid (12.31.5). Crown Copyright 2009 Published by Elsevier B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Aquaculture Rock Lobster
Author:Ward, LR (Dr Louise Adams)
Author:Carter, CG (Professor Chris Carter)
ID Code:58638
Year Published:2009
Web of Science® Times Cited:6
Deposited By:NC Marine Conservation and Resource Sustainability
Deposited On:2009-10-16
Last Modified:2012-03-05
Downloads:0

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