Determining the most appropriate feeding regime for the South African abalone Haliotis midae Linnaeus grown on kelp

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dc.contributor.authorFrancis, Tamson
dc.contributor.authorManeveldt, Gavin
dc.contributor.authorVenter, Jonathan
dc.date.accessioned2013-06-12T14:24:05Z
dc.date.available2013-06-12T14:24:05Z
dc.date.issued2008
dc.description.abstractBeach-cast kelp (the most widely used feed for commercially grown South African abalone) is plentiful during winter months when periodic storms cause kelp to wash ashore. During summer, however, this resource is not always readily available and farmed abalone are often starved for short periods. The aim of this research was to assess how periodic kelp starvation influences growth of the commercially grown abalone, Haliotis midae Linnaeus. Growth of grow-out abalone was monitored on a commercial abalone farm over a period of six months and consisted of 3 treatments with 2 replicates (n = ±250 abalone per replicate). The treatments were: Control (abalone always given more kelp than what they typically needed); Treatment 1 (abalone fed their weekly ration only once a week); Treatment 2 (abalone fed half their weekly ration every 3 and then 4 days respectively). While the data at first suggest that the control animals outperform the treatment animals, after undergoing an initial adjustment period to the new feeding regime, the treatment animals perform better. Weight gain and feed conversion efficiencies show that the treatment animals perform better overall. The control animals generally required much more feed to produce comparable increases in both length and weight compared to the treatment animals. This study has shown that periodic bouts of starvation is beneficial to Haliotis midae, allowing variable growth spurts when returned to full feed rations.en_US
dc.description.accreditationWeb of Scienceen_US
dc.identifier.citationFrancis, T., et al. (2008). Determining the most appropriate feeding regime for the South African abalone Haliotis midae Linnaeus grown on kelp. Journal of Applied Phycology, 20: 597‐602en_US
dc.identifier.issn0921-8971
dc.identifier.urihttp://hdl.handle.net/10566/634
dc.language.isoenen_US
dc.privacy.showsubmitterfalse
dc.publisherSpringer Verlagen_US
dc.rightsThis is the author's final draft following peer review. It may be displayed and circulated, subject to full acknowledgement of author and source. The published item is copyright Springer Verlag.
dc.source.urihttp://dx.doi.org/10.1007/978-1-4020-9619-8_19
dc.status.ispeerreviewedtrue
dc.subjectAbaloneen_US
dc.subjectCompensatory growthen_US
dc.subjectFeed conversion efficiencyen_US
dc.subjectGrowthen_US
dc.subjectHaliotis midaeen_US
dc.subjectKelpen_US
dc.subjectStarvationen_US
dc.titleDetermining the most appropriate feeding regime for the South African abalone Haliotis midae Linnaeus grown on kelpen_US
dc.typeArticleen_US

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