Effect of Dietary Protein Level on Growth Performance and Nitrogen Excretion of the Yellow Tail Cichlid, Pseudotropheus acei

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dc.authoridAltin, Aytac/0000-0002-0327-6665
dc.authoridGuroy, Derya/0000-0002-8254-1403
dc.authoridMerrifield, Daniel/0000-0002-1790-2217
dc.authoridGuroy, Betul/0000-0002-4298-6256
dc.contributor.authorGuroy, Derya
dc.contributor.authorSahin, Izzet
dc.contributor.authorGuroy, Betul
dc.contributor.authorAltin, Aytac
dc.contributor.authorMerrifield, Daniel Lee
dc.date.accessioned2025-01-27T20:34:36Z
dc.date.available2025-01-27T20:34:36Z
dc.date.issued2012
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractA 12-week growth trial was conducted to determine the effects of dietary protein on the growth of the yellow tail cichlid, Pseudotropheus acei, and on water quality in closed recirculating systems. Six test diets were formulated to contain protein levels ranging 25-50% by substituting corn oil and alpha-starch for fishmeal. Diets were assigned to triplicate groups of 10 fish in a completely randomized design. The feed conversion ratios of fish fed the 35% and 50% crude protein diets were significantly (p<0.05) lower than that of fish fed the 30% protein diet. The protein efficiency ratio declined as the dietary protein level increased. Dietary protein levels significantly influenced total ammonia-nitrogen excretion (TAN); fish fed 50% protein excreted higher concentrations of ammonia-nitrogen than fish fed 25-35% dietary protein (p<0.05). Results suggest that inclusion of more than 35% protein in diets containing 10% crude lipid does not benefit juvenile yellow tail growth performance. Further, as TAN excretion and feed costs increased at protein levels beyond 35%, we recommend a diet containing 35% protein and 10% lipid for promoting good growth of juvenile yellow tail cichlids under the conditions used in the present trial.
dc.description.sponsorshipCouncil of Scientific Research Projects of University of Yalova [2011/012]
dc.description.sponsorshipThe authors thank Dr. O. Ozen, Faculty of Fisheries, Canakkale Onsekiz Mart University, for his help with the statistical analysis. We also thank the Agromey Feed Mill Company and Kartal Chemical Incorporated for providing feed ingredients and the Otuz petshop (www.otuz.com) for providing technical support. This work was supported by The Council of Scientific Research Projects of University of Yalova, Project No. 2011/012.
dc.identifier.issn0792-156X
dc.identifier.scopus2-s2.0-84855580951
dc.identifier.scopusqualityQ4
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23376
dc.identifier.volume64
dc.identifier.wosWOS:000301224300001
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIsraeli Journal Of Aquaculture-Bamidgeh
dc.relation.ispartofIsraeli Journal of Aquaculture-Bamidgeh
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectyellow tail cichlid
dc.subjectPseudotropheus acei
dc.subjectornamental fish
dc.subjectprotein requirements
dc.subjectgrowth performance
dc.subjectammonia-nitrogen excretion
dc.titleEffect of Dietary Protein Level on Growth Performance and Nitrogen Excretion of the Yellow Tail Cichlid, Pseudotropheus acei
dc.typeArticle

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