Effects of wild and farm-grown macroalgae on the growth of juvenile South African abalone Haliotis midae Linnaeus

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dc.contributor.authorRobertson-Andersson, Deborah
dc.contributor.authorManeveldt, Gavin
dc.contributor.authorNaidoo, Krishni
dc.date.accessioned2013-06-14T08:55:14Z
dc.date.available2013-06-14T08:55:14Z
dc.date.issued2011
dc.description.abstractThe effect of various macroalgal diets on the growth of grow-out (> 20 mm shell length) South African abalone Haliotis midae was investigated on a commercial abalone farm. The experiment consisted of four treatments: fresh kelp blades (Ecklonia maxima [Osbeck] Papenfuss) (~ 10 % protein); farmed, protein-enriched Ulva lactuca Linnaeus (~26 % protein) grown in aquaculture effluent; wild U. lactuca (~ 20 % protein); and a combination (mixed) diet of kelp blades + farmed U. lactuca. Abalone grew best on the combination diet (0.423 ± 0.02% weight dayˉ¹ SGR [specific growth rate]; 59.593 ± 0.02 µm dayˉ¹ DISL [daily increment in shell length]; 1.093 final CF [condition factor]) followed by the kelp only diet (0.367 ± 0.02 % weight dayˉ¹ SGR; 53.148 ± 0.02 µm dayˉ¹ DISL; 1.047 final CF), then the farmed, protein-enriched U. lactuca only diet (0.290 ± 0.02% weight dayˉ¹ SGR; 42.988 ± 0.03 µm dayˉ¹ DISL; 1.013 final CF) that in turn outperformed the wild U. lactuca only diet (-0.079 ± 0.01 % weight dayˉ¹ SGR; 3.745 ± 0.02 µm dayˉ¹ DISL; 0.812 final CF). The results suggest that protein alone could not have accounted for the differences produced by the varieties of U. lactuca and that the gross energy content is probably important.en_US
dc.description.accreditationWeb of Scienceen_US
dc.identifier.citationRobertson-Andersson, D.,et al. (2011). Effects of wild and farm‐grown macroalgae on the growth of juvenile South African abalone Haliotis midae Linnaeus. African Journal of Aquatic Science, 36(3): 331‐337en_US
dc.identifier.issn1608-5914
dc.identifier.urihttp://hdl.handle.net/10566/644
dc.language.isoenen_US
dc.privacy.showsubmitterfalse
dc.publisherTaylor and Francisen_US
dc.rightsThis is the authors' final draft following peer review. It may be displayed and circulated, subject to full acknowledgement of author and source. The published item is copyright Taylor & Francis.
dc.source.urihttp://dx.doi.org/10.2989/16085914.2011.636910
dc.status.ispeerreviewedtrue
dc.subjectAbaloneen_US
dc.subjectEcklonia maximaen_US
dc.subjectFarm-grownen_US
dc.subjectGrowthen_US
dc.subjectHaliotis midaeen_US
dc.subjectMixed dieten_US
dc.subjectProtein contenten_US
dc.subjectUlva lactucaen_US
dc.titleEffects of wild and farm-grown macroalgae on the growth of juvenile South African abalone Haliotis midae Linnaeusen_US
dc.typeArticleen_US

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Prof. Gavin Maneveldt