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dc.contributor.authorSambraus, Florian
dc.contributor.authorHansen, Tom Johnny
dc.contributor.authorDaae, Britt Sværen
dc.contributor.authorThorsen, Anders
dc.contributor.authorSandvik, Roar
dc.contributor.authorStien, Lars Helge
dc.contributor.authorFraser, Thomas
dc.contributor.authorFjelldal, Per Gunnar
dc.date.accessioned2021-04-26T11:40:46Z
dc.date.available2021-04-26T11:40:46Z
dc.date.created2021-03-25T12:17:03Z
dc.date.issued2020
dc.identifier.citationJournal of Fish Biology. 2020, 97 (1), 137-147.en_US
dc.identifier.issn0022-1112
dc.identifier.urihttps://hdl.handle.net/11250/2739585
dc.description.abstractThe effect of a dietary phosphorus regime in freshwater on vertebra bone mineralization was assessed in diploid and triploid Atlantic salmon, Salmo salar. Fish were fed either a low phosphorus (LP) diet containing 10.5 g kg−1 total phosphorus or a normal phosphorus (NP) diet containing 17.4 g kg−1 total phosphorus from ∼3 to ∼65 g (day 126) in body weight. Two further groups were fed the NP diet from ∼3 g in body weight, but were then switched to the LP diet after 38 (∼10 g in body weight) or 77 (∼30 g in body weight) days. Growth, vertebral ash content (% ash) and radiologically detectable vertebra pathologies were assessed. Triploids were initially smaller than diploids, and again on day 77, but there was no ploidy effect on days 38 or 126. Vertebral ash content increased with increasing body size and those fish fed the NP diet had higher vertebral ash content than those groups fed the LP diet during the intervening time period, but this diet effect became less apparent as fish grew, with all groups having relatively equal vertebral ash content at termination. In general, triploids had lower vertebral ash content than diploids on day 38 and this was most evident in the group fed the LP diet. On day 77, those triploids fed the LP diet during the intervening time period had lower vertebral ash content than diploids. At termination on day 126, the triploids had the same vertebral ash content as diploids, irrespective of diet. There was a ploidy × diet interaction on vertebral deformities, with triploids having higher prevalences of fish with ≥1 deformed vertebra in all dietary groups except continuous NP. In conclusion, between days 0 and 77 (3–30 g body size), triploids required more dietary phosphorus than diploids in order to maintain similar vertebral ash content. A possible link between phosphorus feeding history and phosphorus demand is also discussed.en_US
dc.language.isoengen_US
dc.titleTriploid Atlantic salmon Salmo salar have a higher dietary phosphorus requirement for bone mineralization during early developmenten_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber137-147en_US
dc.source.volume97en_US
dc.source.journalJournal of Fish Biologyen_US
dc.source.issue1en_US
dc.identifier.doi10.1111/jfb.14338
dc.identifier.cristin1901001
dc.relation.projectNorges forskningsråd: 216197en_US
dc.relation.projectFiskeri- og havbruksnæringens forskningsfinansiering: 900723en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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