Method for Determining Apparent Digestibility of Carbohydrate and Protein Sources for Artificial Diets for Juvenile Sea Cucumber, Australostichopus mollis

Slater, MJ; Lassudrie, M; Jeffs, AG

Method for Determining Apparent Digestibility of Carbohydrate and Protein Sources for Artificial Diets for Juvenile Sea Cucumber, Australostichopus mollis

Slater, MJ Lassudrie, M

Jeffs, AG

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Publication Type:: Journal Article
Citation:: Journal of the World Aquaculture Society, 2011, 42 (5), pp. 714 - 725
Issue Date:: 2011-10-01

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Field	Value	Language
dc.contributor.author	Slater, MJ	en_US
dc.contributor.author	Lassudrie, M https://orcid.org/0000-0002-7004-926X	en_US
dc.contributor.author	Jeffs, AG	en_US
dc.date.issued	2011-10-01	en_US
dc.identifier.citation	Journal of the World Aquaculture Society, 2011, 42 (5), pp. 714 - 725	en_US
dc.identifier.issn	0893-8849	en_US
dc.identifier.uri	http://hdl.handle.net/10453/118058
dc.description.abstract	Effective nursery diets can greatly reduce the cost of producing juvenile sea cucumbers for release to aquaculture or restocking programs. However, methods for systematically testing the bioavailability of artificial diet ingredients for sea cucumbers are poorly developed, and consequently, there has been little research in this field. The current study presents methods developed to test the suitability of common carbohydrate and protein sources for inclusion in artificial diets for juvenile Australostichopus mollis. Apparent digestibility of carbohydrates was moderate and did not exceed 50% for any carbohydrates assayed. Wheat starch and carrageenans showed the highest digestibility amongst carbohydrates. Differences in apparent digestibility were not reflected in growth performance of juvenile A. mollis fed carbohydrate diets; overall growth performance was poor for all diets. Artificial protein sources consistently exhibited higher apparent digestibility, ranging from 75.1% for fish meal to 98.1% for casein. Low-cost protein sources, like meat meal, show promise for future use in artificial diet formulation. However, delivering high protein content may reduce ingestion rates and thereby lower overall digestive efficiency in juveniles. Results show that artificial carbohydrate sources have some potential as diet constituents for juvenile sea cucumbers but are unsuitable as primary energy sources. Future testing of artificial carbohydrate sources for A. mollis may require predigestion to improve digestibility. © by the World Aquaculture Society 2011.	en_US
dc.relation.ispartof	Journal of the World Aquaculture Society	en_US
dc.relation.isbasedon	10.1111/j.1749-7345.2011.00510.x	en_US
dc.subject.classification	Fisheries	en_US
dc.title	Method for Determining Apparent Digestibility of Carbohydrate and Protein Sources for Artificial Diets for Juvenile Sea Cucumber, Australostichopus mollis	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	42	en_US
utslib.for	0704 Fisheries Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.issue	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	42	en_US

Abstract:

Effective nursery diets can greatly reduce the cost of producing juvenile sea cucumbers for release to aquaculture or restocking programs. However, methods for systematically testing the bioavailability of artificial diet ingredients for sea cucumbers are poorly developed, and consequently, there has been little research in this field. The current study presents methods developed to test the suitability of common carbohydrate and protein sources for inclusion in artificial diets for juvenile Australostichopus mollis. Apparent digestibility of carbohydrates was moderate and did not exceed 50% for any carbohydrates assayed. Wheat starch and carrageenans showed the highest digestibility amongst carbohydrates. Differences in apparent digestibility were not reflected in growth performance of juvenile A. mollis fed carbohydrate diets; overall growth performance was poor for all diets. Artificial protein sources consistently exhibited higher apparent digestibility, ranging from 75.1% for fish meal to 98.1% for casein. Low-cost protein sources, like meat meal, show promise for future use in artificial diet formulation. However, delivering high protein content may reduce ingestion rates and thereby lower overall digestive efficiency in juveniles. Results show that artificial carbohydrate sources have some potential as diet constituents for juvenile sea cucumbers but are unsuitable as primary energy sources. Future testing of artificial carbohydrate sources for A. mollis may require predigestion to improve digestibility. © by the World Aquaculture Society 2011.

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http://hdl.handle.net/10453/118058