Replacement of fishmeal with rice protein concentrate in practical diets for European sea bass Dicentrarchus labrax reared at winter temperatures

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dc.authoridMerrifield, Daniel/0000-0002-1790-2217
dc.authoridGuroy, Betul/0000-0002-4298-6256
dc.authoridGuroy, Derya/0000-0002-8254-1403
dc.contributor.authorGuroy, Derya
dc.contributor.authorSahin, Izzet
dc.contributor.authorGuroy, Betul
dc.contributor.authorMerrifield, Daniel L.
dc.contributor.authorBulut, Musa
dc.contributor.authorTekinay, Ahmet Adem
dc.date.accessioned2025-01-27T21:03:46Z
dc.date.available2025-01-27T21:03:46Z
dc.date.issued2013
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractAs no information is available regarding the efficacy of using rice protein concentrate (RPC) to replace fishmeal (FM) in diets for European sea bass (Dicentrarchus labrax), a trial was conducted to determine the optimum inclusion for European sea bass juveniles. Diets were formulated to replace 25%, 50% and 75% of fishmeal with RPC. Additional high level inclusion diets (50% and 75%) were supplemented with lysine and methionine to determine if these were limiting factors. Fish (18.0 +/- 0.06g) were fed the experimental diets for 12weeks. The final mean weight and specific growth rate (SGR) were significantly higher in fish fed the control diet (diet FM) and low level RPC (diet RPC25) than in fish fed the other diets. The supplementation of the amino acids had a positive effect on growth, elevating the final weight of the high level RPC (RPC75+AA) group above that of the non-supplemented group (RPC75). However, this was still not comparable to fish fed FM and RPC25 diets. No significant differences in body composition were observed. A digestibility study demonstrated an inverse relationship between elevating inclusion levels of RPC and apparent digestibility coefficients (ADCs) for dry matter and lipid, with significantly lower values than the control being observed with RPC inclusions above 25%. The mesenteric fat index followed this trend. Circulating leucocyte levels, leucocyte ratios and serum lysozyme activity remained unaffected by dietary treatment. However, compared with the control group, fish fed RPC75, RPC50+AA RPC75+AA displayed significantly lower haematocrit values. The present study demonstrates that the inclusion of RPC at 140gkg1 (effectively replacing 25% of FM content) does not compromise European sea bass growth performance, body quality or basic haematological parameters. It is suggested that future studies including higher levels test the efficacy of additional amino acid supplementation (e.g. tryptophan).
dc.description.sponsorshipCouncil of Scientific Research Projects of Canakkale Onsekiz Mart University [2008/59]
dc.description.sponsorshipThe authors kindly thank Zeki Sonmez, Seda Karakoca, Sinem Kucukoguzsoylu, Mustafa Karga and Ozden Orucoglu for their technical assistance. We also thank the Turtas, Corporation, Agromey Feed Mill Company and Kartal Chemicals for providing feed ingredients. This work was supported by The Council of Scientific Research Projects of Canakkale Onsekiz Mart University, Project No: 2008/59.
dc.identifier.doi10.1111/j.1365-2109.2011.03053.x
dc.identifier.endpage471
dc.identifier.issn1355-557X
dc.identifier.issue3
dc.identifier.scopus2-s2.0-84873301533
dc.identifier.scopusqualityQ2
dc.identifier.startpage462
dc.identifier.urihttps://doi.org/10.1111/j.1365-2109.2011.03053.x
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27438
dc.identifier.volume44
dc.identifier.wosWOS:000314566200015
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley-Blackwell
dc.relation.ispartofAquaculture Research
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectEuropean sea bass
dc.subjectrice protein concentrate
dc.subjectamino acid
dc.subjectgrowth performance
dc.subjectfeed utilization
dc.subjecthealth
dc.titleReplacement of fishmeal with rice protein concentrate in practical diets for European sea bass Dicentrarchus labrax reared at winter temperatures
dc.typeArticle

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