Pedersen, Lars-Flemming and Jokumsen, Alfred (2022) Organic trout production in Denmark – A review with focus on water quality and water treatment. [Økologisk ørred produktion i Danmark – En oversigt med fokus på vand kvalitet og vand behandling.] .
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Summary
The development of organic aquaculture in Denmark has been ongoing for two decades, currently representing 2 % of the national rainbow trout production. Organic aquaculture practice is subjected to a number of specific restrictions compared to conventional aquaculture operation, which pose challenges but also allows the certified producers to achieve a premium price of their product. Water treatment is one example; only easy degradable, sanitizers are allowed to be used in certified organic aquaculture production as specified in the current EU legislation.
Formalin, an effective and commonly used biocide for aquaculture water control, is not permitted in organic aquaculture which forces new treatment practices to be developed and implemented.
Here we describe issues related to the implementation of new water treatment practices and present potential practical solutions. The interaction between management and water quality is described and the implications for water treatment is emphasized.
Results and experiences of using peracetic acid products and hydrogen peroxide in organic freshwater fish farms are provided. Current challenges and future research needs regarding water quality control are discussed in a context of fish health, fish welfare, worker safety, ethics and environmental justification.
Finally, sustainable development of organic aquaculture is put into perspective based on the Danish lessons learned.
Summary translation
Økologisk akvakultur har været under udvikling i Danmark i et par årtier og udgør ca. 2 % af den danske ørred produktion. Økologisk fiskeopdræt er underkastet specifikke restriktioner i forhold til konventionel opdræt, som byder på udfordringer men også giver den økologiske opdrætter mulighed for en højere pris på sine produkter. Vand behandling er en af udfordringerne, idet EU regelsættet for økologisk akvakultur kun tillader let nedbrydelige stoffer i økologisk akvakultur produktion.
Formalin er et effektivt og almindeligt anvendt biocid til vandbehandling i akvakultur, men er ikke tilladt i økologisk akvakultur, hvorfor nye behandlings metoder skal udvikles og implementeres.
ShelterFish har bidraget til implementering af nye typer vandbehandling og mulige praktiske løsninger. Samspillet mellem drifts praksis og vandkvalitet er beskrevet med særlig fokus på vandbehandling.
Resultater og erfaringer med brug af pereddikesyre produkter og brint-over-ilte i økologiske ferskvandsdambrug bliver beskrevet. Udfordringer og fremtidige forskningsbehov i forhold til kontrol af vandkvalitet diskuteres i sammenhæng med fiskesundhed, fiske velfærd, arbejdssikkerhed, etik og miljø aspekter.
Afslutningsvis sættes bæredygtig udvikling af økologisk akvakultur i perspektiv baseret de danske erfaringer.
| EPrint Type: | Report |
|---|---|
| Keywords: | Disinfection, organic aquaculture, microbial water quality, water treatment, peracetic acid, hydrogen peroxide, sodium percarbonate |
| Agrovoc keywords: | Language Value URI English UNSPECIFIED UNSPECIFIED |
| Subjects: | Food systems > Food security, food quality and human health Animal husbandry > Health and welfare Values, standards and certification > Regulation |
| Research affiliation: | Denmark > Organic RDD 4 > ShelterFish |
| Deposited By: | Jokumsen, Senior Advisory Scientist Alfred |
| ID Code: | 43820 |
| Deposited On: | 03 Mar 2022 09:00 |
| Last Modified: | 03 Mar 2022 09:00 |
| Document Language: | English |
| Status: | Submitted |
| Refereed: | Not peer-reviewed |
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