Effect of autoclaved Ulva meal on growth performance, nutrient utilization and fatty acid profile of rainbow trout, Oncorhynchus mykiss

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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.authoridErgün, Sebahattin/0000-0003-3685-0691
dc.authoridErgün, Sebahattin/0000-0002-9077-9438
dc.contributor.authorGuroy, Betul
dc.contributor.authorErgün, Sebahattin
dc.contributor.authorMerrifield, Daniel L.
dc.contributor.authorGuroy, Derya
dc.date.accessioned2025-01-27T20:54:25Z
dc.date.available2025-01-27T20:54:25Z
dc.date.issued2013
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractA feeding trial was conducted to investigate the effects of the dietary incorporation of autoclaved and raw (non-autoclaved) Ulva meal on juvenile rainbow trout (Oncorhynchus mykiss) growth, nutrient utilization, body composition, diet digestibility and fatty acid composition. An algae-free control diet and four experimental diets with either 5 or 10 % inclusion levels of raw Ulva meal (5 % = RU5; 10 % = RU10) or autoclaved Ulva meal (5 % = AU5; 10 % = AU10) were formulated. Fish were fed three times daily to apparent satiation for 12 weeks. The growth of fish fed RU10 (final weight = 76.7 +/- A 3.31 g; SGR = 2.8 +/- A 0.05 %) diet was significantly higher than that in fish fed the AU10 diet (67.5 +/- A 1.61 g; SGR = 2.6 +/- A 0.03 %). The feed conversion ratio (FCR) was significantly better in fish fed the RU10 diet (0.9 +/- A 0.06) compared with control diet (1.0 +/- A 0.06). Condition factor, viscerosomatic index and dress-out remained unaffected by dietary treatment. The hepatosomatic index (HSI) was significantly lower (P < 0.05) in fish fed the AU10 diet (1.2 +/- A 0.19) than fish fed the other diets (a parts per thousand yen1.6). The level of eicosapentaenoic acid (20:5n-3-EPA) in muscle from fish fed the RU10, AU5 and AU10 diets was significantly higher than in fish fed control diet (P < 0.05). Dietary inclusion of Ulva meals resulted in a significant increase in muscle docosapentaenoic acid (22:5n-3-DPA) levels at the end of the feeding period. The results indicate that the dietary inclusion of raw Ulva meal at levels of up to 10 % can be used without significant negative effects on the growth performance, nutrient utilization, dietary digestibility and muscle fatty acid composition. In fact, the inclusion of dietary raw and autoclaved Ulva meal elevated n-3 fatty acids levels of rainbow trout muscle.
dc.identifier.doi10.1007/s10499-012-9592-7
dc.identifier.endpage615
dc.identifier.issn0967-6120
dc.identifier.issue3
dc.identifier.scopus2-s2.0-84876959548
dc.identifier.scopusqualityQ1
dc.identifier.startpage605
dc.identifier.urihttps://doi.org/10.1007/s10499-012-9592-7
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26072
dc.identifier.volume21
dc.identifier.wosWOS:000318445500007
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofAquaculture International
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectUlva meal
dc.subjectFeed additive
dc.subjectAlgal products
dc.subjectHeat treatment
dc.subjectSalmonids
dc.subjectFatty acid
dc.titleEffect of autoclaved Ulva meal on growth performance, nutrient utilization and fatty acid profile of rainbow trout, Oncorhynchus mykiss
dc.typeArticle

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