Effect of dietary Ulva and Spirulina on weight loss and body composition of rainbow trout, Oncorhynchus mykiss (Walbaum), during a starvation period

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dc.authoridErgün, Sebahattin/0000-0003-3685-0691
dc.authoridGuroy, Derya/0000-0002-8254-1403
dc.authoridErgün, Sebahattin/0000-0002-9077-9438
dc.authoridGuroy, Betul/0000-0002-4298-6256
dc.authoridMerrifield, Daniel/0000-0002-1790-2217
dc.contributor.authorGuroy, D.
dc.contributor.authorGuroy, B.
dc.contributor.authorMerrifield, D. L.
dc.contributor.authorErgun, S.
dc.contributor.authorTekinay, A. A.
dc.contributor.authorYigit, M.
dc.date.accessioned2025-01-27T20:54:26Z
dc.date.available2025-01-27T20:54:26Z
dc.date.issued2011
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractP>A study was conducted to determine the effect of dietary algal supplementation on weight loss and proximate composition in rainbow trout, Oncorhynchus mykiss, during starvation. An algae-free control diet (C) and four experimental diets, including varying levels of raw Ulva meal (5% = U5; 10% = U10) and Spirulina meal (5% = S5; 10% = S10) were formulated. Fish were fed to satiation for 12 weeks and then subjected to a 3-week starvation period. Body weight, viscerosomatic index (VSI, %), hepatosomatic index (HSI, %), dress-out (DO, %) and chemical composition of carcass were analysed at the end of each starvation week. The accumulated weight loss of the fish fed dietary algae was almost 50% less than the control group (p < 0.05) after 2 and 3 weeks starvation. No significant differences in weight loss were observed among the fish fed different algal diets during the starvation period. Total body protein and ash contents remained constant in all groups throughout the starvation period. Fish in all treatments lost a significant level of total lipids and changes of liver fatty acid profiles were also observed. Results indicate that low level inclusion of algae in aquafeeds may have economical advantages in terms of reducing weight loss in fish when subjected to a short-term fasting period, that sometimes is necessary after a heavy rainfall or when fish stocks are held back to meet market demand.
dc.identifier.doi10.1111/j.1439-0396.2010.01057.x
dc.identifier.endpage327
dc.identifier.issn0931-2439
dc.identifier.issue3
dc.identifier.pmid20880289
dc.identifier.scopus2-s2.0-79953757107
dc.identifier.scopusqualityQ1
dc.identifier.startpage320
dc.identifier.urihttps://doi.org/10.1111/j.1439-0396.2010.01057.x
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26073
dc.identifier.volume95
dc.identifier.wosWOS:000289261900007
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of Animal Physiology and Animal Nutrition
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectrainbow trout
dc.subjectfasting
dc.subjectweight loss
dc.subjectfatty acids
dc.subjectalgae meal
dc.titleEffect of dietary Ulva and Spirulina on weight loss and body composition of rainbow trout, Oncorhynchus mykiss (Walbaum), during a starvation period
dc.typeArticle

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