Effect of Phytase on Growth and Phosphorus Utilization in Japanese Flounder (Paralichthys olivaceus)

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dc.contributor.authorSarker, P.K.en
dc.contributor.authorHosokawa, H.en
dc.contributor.editorSmith, Stephen Allenen
dc.date.accessioned2019-06-25T16:55:33Zen
dc.date.available2019-06-25T16:55:33Zen
dc.date.issued2009-06-01en
dc.description.abstractAn experiment was conducted to investigate the effect of phytase supplementation on weight gain, phosphorus and protein digestibility and retention in Japanese flounder (Paralichthys olivaceus) fed a soybean meal (SBM)-containing diet. Six levels of phytase-supplemented diets containing 0, 150, 300, 450, 900 and 1500 FTU (phytase unit)/100g diet were assigned to triplicate tanks and fed to Japanese flounder (20 fish/tank, initial average weight 151.4 g) for 40 days. The increase of soluble phosphorus and decrease of phytic acid remained relatively constant for all levels receiving the 300 FTU diet and greater. Significantly (P<0.05) greater weight gain and higher feed conversion ratios (FCR) were observed in fish fed diets supplemented at 300 FTU or greater compared to the control (0 FTU) diet. Significantly (P<0.05) improved apparent protein and phosphorus digestibility, as well as serum calcium concentration were found in fish fed the 300 FTU diet. All diets supplemented at 300 FTU or greater also showed a significantly (P<0.05) improved concentration of bone calcium and zinc. The 150 FTU inclusion level showed only better protein and phosphorus retention, bone phosphorus and magnesium than the control (0 FTU) diet. Therefore, this study indicated that supplementation of phytase is effective and that the 300 FTU/100g SBM-containing diet resulted in the maximum release of soluble phosphorus, and as a consequence improved weight gain, FCR, bone minerals, phosphorus and protein digestibility and retention in Japanese flounder.en
dc.format.extent17 pagesen
dc.format.extent533.54 KBen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSarker, P.K. and Hosokawa, H., 2009. Effect of Phytase on Growth and Phosphorus Utilization in Japanese Flounder (Paralichthys olivaceus). International Journal of Recirculating Aquaculture, 10(1). DOI: http://doi.org/10.21061/ijra.v10i1.1334en
dc.identifier.doihttps://doi.org/10.21061/ijra.v10i1.1334en
dc.identifier.eissn2572-9160en
dc.identifier.issn1547-917Xen
dc.identifier.issue1en
dc.identifier.urihttp://hdl.handle.net/10919/90630en
dc.identifier.volume10en
dc.language.isoenen
dc.publisherCommercial Fish and Shellfish Technologies Program, Virginia Techen
dc.rightsIn Copyrighten
dc.rights.holderCommercial Fish and Shellfish Technologies Program, Virginia Techen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectJapanese Flounderen
dc.subjectRecirculating Aquacultureen
dc.titleEffect of Phytase on Growth and Phosphorus Utilization in Japanese Flounder (Paralichthys olivaceus)en
dc.title.serialInternational Journal of Recirculating Aquacultureen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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