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The effect of dietary carbohydrates on the growth response, digestive gland glycogen and digestive enzyme activities of early spiny lobster juveniles, Jasus edwardsii

Citation

Simon, CJ and Jeffs, A, The effect of dietary carbohydrates on the growth response, digestive gland glycogen and digestive enzyme activities of early spiny lobster juveniles, Jasus edwardsii, Aquaculture Nutrition, 17, (6) pp. 613-626. ISSN 1365-2095 (2011) [Refereed Article]


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The definitive published version is available online at: http://www3.interscience.wiley.com/

DOI: doi:10.1111/j.1365-2095.2011.00861.x

Abstract

The effect of various carbohydrate sources (glucose, sucrose, agar, wheat, tapioca, maize, potato and dextrin), and inclusion levels of gelatinized maize starch (0, 70, 170, 270 g kg-1), incorporated in semi-purified diets on the performance [growth, survival, food consumption (FC), enzyme activity and glycogen content of the digestive gland (DG)] of spiny lobster juveniles was investigated in a 12- week culture experiment. There was no difference in specific FC among diets (1.1% BW day-1), but lobsters fed with fresh mussel grew significantly faster (specific growth rate = 1.8% BW day-1) than on the formulated diets (0.9– 1.1% BW day-1). None of the carbohydrate supplements tested produced a significant improvement in growth or survival over a basal control diet. However, the diet containing 270 g kg-1 native wheat starch resulted in the highest moulting (mean = 2.1 moults per lobster), glycogen (3.3 mg g-1) and free glucose (1.1 mg g-1) concentrations among lobsters fed with the formulated diets, suggesting a superior utilization of this source of carbohydrate. The greater glycogen (8.0 mg g-1 tissue) and free glucose (2.0 mg g-1 tissue) concentrations, as well as higher specific activity of α-amylase (2.3 versus <0.7 U mg-1 for other diets), found in the DG of lobsters fed with fresh mussel indicated a metabolism strongly directed to the utilization of glycogen.

Item Details

Item Type:Refereed Article
Keywords:carbohydrate, digestion, digestive enzyme, glucose glycogen, utilization
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:Simon, CJ (Dr Cedric Simon)
ID Code:76056
Year Published:2011
Web of Science® Times Cited:18
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2012-02-24
Last Modified:2013-11-27
Downloads:2 View Download Statistics

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