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Organic fishfarming requires robust fish

Andersen, G., Nikolaj and Madsen, Lone (2016) Organic fishfarming requires robust fish. [Økologisk fiskeopdræt kræver robuste fisk.] Økologi & Erhverv, 6 October 2016, p. 1.

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Summary

Da medicinbehandling af økologisk ørred er uønsket og kun er tilladt i stærkt begrænset omfang, er ynglens robusthed overfor bl.a. den alvorligste yngelsygdom i dansk ørredopdræt, YDS (”yngeldødeligheds-syndrom”), særdeles vigtig. Ynglens robusthed måles i forhold til ynglens swim-up adfærd (first feeding) og performance under opvæksten. Indholdet af specifikke essentielle Ω-3 fedtsyrer i foderet til ynglen er særlig vigtig for fiskens vækst, sundhed og velfærd, herunder robusthed overfor stress. Dette undersøges ved stress tests samt challenge tests over for YDS.

Summary translation

In organic farming, medication is only allowed within very strict limits. Therefore, the robustness of the fry to diseases is crucial. Especially, this concerns the most serious trout fry disease in Danish aquaculture, Rainbow Trout Fry Syndrome (RTFS). The robustness of the fry seems to be related to larval developmental rate and to the dietary content of specific Ω-3 fatty acids (HUFAs). Stress and RTFS tests are being performed to investigate if these two factors can be included in strategies to increase the robustness of the fry.

EPrint Type:Newspaper or magazine article
Keywords:Robust rainbow trout,YDS, Yngeldødelighedssyndrom
Subjects: Animal husbandry > Health and welfare
Research affiliation: Denmark > Organic RDD 2 > RobustFish
Deposited By: Jokumsen, Senior Advisory Scientist Alfred
ID Code:30655
Deposited On:24 Oct 2016 13:41
Last Modified:24 Oct 2016 13:41
Document Language:Danish/Dansk
Status:Published
Refereed:Not peer-reviewed

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