A comparison of various seaweed-based diets and formulated feed on growth rate of abalone in a land-based aquaculture system

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dc.contributor.authorNaidoo, Krishni
dc.contributor.authorManeveldt, Gavin
dc.contributor.authorRuck, Kevin
dc.contributor.authorBolton, John J.
dc.date.accessioned2013-10-28T18:59:29Z
dc.date.available2013-10-28T18:59:29Z
dc.date.issued2007
dc.description.abstractThe effects of different diets on growth in the cultured South African abalone, Haliotis midae (Linnaeus), was investigated. Growth of juvenile Haliotis midae was monitored on a commercial abalone farm over a period of 9-months in an experiment consisting of 9 treatments with 4 replicates (n = 250 individuals per replicate). The treatments were: fresh kelp (Ecklonia maxima) blades (seaweed control); Abfeed® (formulated feed control); kelp + Abfeed®; dried kelp pellets; dried kelp blades; dried kelp stipes; fresh kelp with the epiphyte Carpoblepharis flaccida; a mixed diet (Gracilaria gracilis, Ulva lactuca, and kelp) and a rotational diet (abalone were fed 1 of the 9 treatments for the first week and them kelp for the next 3 weeks). Results show that abalone grow well on all fresh seaweed combinations, but do best on a mixed diet. The likely reason for the success of the mixed diet is that the red and green seaweed was farm grown, with an increased protein content. Dried kelp in any form produced poor growth. Abalone fed on the mixed diet grew at 0.066 mm day־¹ shell length and 0.074 g day־¹ body weight; this corresponds to 24.09 mm shell length and 27.01 g body weight increase per annum. Abalone fed on dried kelp grew at only 0.029 mm day־¹ shell length and of 0.021 g day־¹ body weight. Abalone grown on Abfeed® grew at 0.049 mm day־¹ shell length and 0.046 g day־¹ body weight which corresponds to 17.88 mm and 16.79 g increase per annum; this is better than the dried seaweed feeds, but poorer than the fresh seaweed combinations. This study shows that seaweed diets, particularly if the diets include seaweeds grown in animal aquaculture effluent, are good substitutes for the formulated feeds generally used today.en_US
dc.description.accreditationWeb of Scienceen_US
dc.identifier.citationManeveld, G.W., et al . (2007). A comparison of various seaweed-based diets and formulated feed on growth rate of abalone in a land-based aquaculture system. Journal of Applied Phycology, 18: 437-443en_US
dc.identifier.issn0921-8971
dc.identifier.urihttp://hdl.handle.net/10566/779
dc.language.isoenen_US
dc.privacy.showsubmitterfalse
dc.publisherSpringeren_US
dc.rightsThis is the author postprint version of an article by Springer. The file may be freely used, provided that acknowledgement of the source is given.
dc.source.urihttp://dx.doi.org/10.1007/s10811-006-9045-7
dc.status.ispeerreviewedtrue
dc.subjectAbaloneen_US
dc.subjectDieten_US
dc.subjectGrowthen_US
dc.subjectSeaweeden_US
dc.subjectEckloniaen_US
dc.subjectHaliotis midaeen_US
dc.titleA comparison of various seaweed-based diets and formulated feed on growth rate of abalone in a land-based aquaculture systemen_US
dc.typeArticleen_US

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