The growth of post-weaning abalone (Haliotis midae Linnaeus) fed commercially available formulated feeds supplemented with fresh wild seaweed

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dc.contributor.authorDlaza, Thembinkosi
dc.contributor.authorManeveldt, Gavin
dc.contributor.authorViljoen, Cecilia
dc.date.accessioned2013-08-21T11:15:20Z
dc.date.available2013-08-21T11:15:20Z
dc.date.issued2008
dc.description.abstractThe effect of five formulated feeds, supplemented with fresh wild seaweed on the growth of post-weaning juvenile abalone (6 - 20 mm shell length), Haliotis midae Linnaeus was investigated by means of a growth trial at a commercial abalone farm over a period of 11 months. The experiment included 10 diet treatments with two replicates each (n = 50 individuals per replicate). The first five diet treatments comprised of four fishmeal-based formulated feeds: Abfeed®, Adam & Amos® ‘a’, Adam & Amos® ‘b’ and Adam & Amos® ‘c’; and an all-seaweed-based formulated pellet: FeedX. The additional five diet treatments comprised the formulated feeds above, supplemented with fresh, wild seaweeds; the kelp, Ecklonia maxima (5-15% protein) and Ulva lactuca (3.7-19.9% protein). The fishmeal-based protein feeds produced significantly better growth than the all-seaweed-based protein feed, FeedX (0.49±0.03 SGR; 27.15±0.02 DISL; 0.864 final CF). Abfeed® (1.00±0.02 SGR; 60.79±0.04 DISL; 1.312 final CF) performed best of all the formulated feeds. Supplementation with fresh wild seaweed, however, significantly improved growth of all abalone with supplemented Abfeed® (1.05±0.02 SGR; 63.61±0.05 DISL; 1.447 final CF) outperforming all supplemented feeds. More striking though was that the condition factor of abalone fed that feed (FeedX) that performed particularly poorly in the growth trials was dramatically improved by supplementation. The results of this study show that supplementation with fresh wild seaweed enhances the growth of abalone reared on formulated feeds.en_US
dc.description.accreditationWeb of Scienceen_US
dc.identifier.citationDlaza, T.S., Maneveldt, G.W. & Viljoen, C. (2008). The growth of post‐weaning abalone (Haliotis midae Linnaeus) fed commercially available formulated feeds supplemented with fresh wild seaweed. African Journal of Marine Science, 30(1): 199 ‐203en_US
dc.identifier.issn1814-232X
dc.identifier.urihttp://hdl.handle.net/10566/692
dc.language.isoenen_US
dc.privacy.showsubmitterfalse
dc.publisherNational Inquiry Services Centre (NISC) and Taylor & Francisen_US
dc.rightsCopyright National Inquiry Services Centre (NISC) and Taylor & Francis. This file may be freely used provided that the source is acknowledged. No commercial distribution of this text is permitted.
dc.source.urihttp://dx.doi.org/10.2989/AJMS.2008.30.1.22.472
dc.status.ispeerreviewedtrue
dc.subjectAbfeeden_US
dc.subjectAdam and Amosen_US
dc.subjectDieten_US
dc.subjectFormulated feeden_US
dc.subjectGrowthen_US
dc.subjectHaliotis midaeen_US
dc.subjectSeaweeden_US
dc.subjectsupplementationen_US
dc.titleThe growth of post-weaning abalone (Haliotis midae Linnaeus) fed commercially available formulated feeds supplemented with fresh wild seaweeden_US
dc.typeArticleen_US

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Research Articles (Biodiversity and Conservation Biology)
Prof. Gavin Maneveldt