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Influence of feeding regime on intraspecific competition, fin damage and growth in 1+ Atlantic salmon parr (Salmo salar L.) held in freshwater production cages

2007; Wiley; Volume: 38; Issue: 11 Linguagem: Inglês

10.1111/j.1365-2109.2007.01777.x

1365-2109

N Chris, Sunil Kadri, David F. Mitchell, Felicity A. Huntingford,

Fish Biology and Ecology Studies

Aquaculture ResearchVolume 38, Issue 11 p. 1137-1143 Influence of feeding regime on intraspecific competition, fin damage and growth in 1+ Atlantic salmon parr (Salmo salar L.) held in freshwater production cages Chris Noble, Chris Noble Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UKSearch for more papers by this authorSunil Kadri, Sunil Kadri Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UK Aquaculture Innovation, Glasgow, Scotland, UKSearch for more papers by this authorDavid F Mitchell, David F Mitchell Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UK Huon Aquaculture Company Pty Ltd., Dover, Tas., AustraliaSearch for more papers by this authorFelicity A Huntingford, Felicity A Huntingford Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UKSearch for more papers by this author Chris Noble, Chris Noble Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UKSearch for more papers by this authorSunil Kadri, Sunil Kadri Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UK Aquaculture Innovation, Glasgow, Scotland, UKSearch for more papers by this authorDavid F Mitchell, David F Mitchell Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UK Huon Aquaculture Company Pty Ltd., Dover, Tas., AustraliaSearch for more papers by this authorFelicity A Huntingford, Felicity A Huntingford Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, UKSearch for more papers by this author First published: 01 August 2007 https://doi.org/10.1111/j.1365-2109.2007.01777.xCitations: 36 Correspondence: C Noble, Fish Biology Group, Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, G12 8QQ UK. E-mail: c.noble@bio.gla.ac.uk Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract The feeding behaviour, growth and feed conversion ratio (FCR) of cage-held Atlantic salmon parr (Salmo salar L.) were studied when in 576 m3 (12 m × 12 m × 4 m) commercial freshwater cages under ambient water temperature (8.84±3.53°C) and photoperiod (11.02±2.05 h) for 205 days. The effect of feeding regime on fin damage was also investigated. Six groups (n=31 234±2051 fish group−1, initial stocking density 1.25±0.14 kg m−3) were fed to satiation using either (a) an imposed regime involving scheduled, fixed ration feeding every 10 min from dawn till dusk or (b) on demand from dawn till dusk using commercial interactive feedback systems. During feeding, there were no significant differences in aggression although swimming speeds and turning angles were significantly higher in fish under the imposed regime. On-demand feeding significantly reduced the incidence of dorsal fin damage. There was no clear relationship between fish size, feed regime and the incidence of fin damage until 1 week before the fish were transferred to marine cages, when the smallest fish under each feeding regime had the highest incidence of fin damage. Interestingly, growth did not differ between regimes, but fish under the imposed regime were significantly overfed and achieved higher FCRs. Citing Literature Volume38, Issue11August 2007Pages 1137-1143 RelatedInformation