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Kort nyhed til DTU Fødevareinstituttets web
Biologiske alternativer til medicinering af fisk
Naturligt forekommende kulhydrater hos planter, bakterier og svampe kan bruges som
helsefremmende biologiske alternativer og derved reducere brugen af medicin i fiskopdræt.
Kulhydraterne bidrager til at reducere risikoen for sygdomme hos fisk og kan derfor være med
til at forbedre fiskevelfærden. Det har Dominika Alicja Przybylska fra DTU Fødevareinstituttet
vist i resultaterne fra sin ph.d.-afhandling.
Kontrol af fiskesygdomme i produktionen har stor betydning for hav- og dambrugere for at sikre, at
deres akvakulturproduktion er sund og rentabel og fiskevelfærden er optimal. Brug af medicin til
behandling af almindelige sygdomme hos fisk er begrænsede og kostbare og i nogle tilfælde er en
sådan behandling ikke mulig på grund af resistens i bakterier og svampe eller EU’s
økologiforordninger, som fastlægger regler for produktion, import og mærkning af økologiske
fødevarer.
Sårhelingen sker hurtigere
De såkaldte β-glucaner, som er naturligt forekommende kulhydrater hos planter, bakterier og svampe,
har vist sig at få sårhelingen hos fisk til at ske hurtigere i sammenligning med fisk, der ikke er
modtager disse kulhydrater. β-glucaner tilsat fiskenes foder, har vist sig at forbedre fiskenes
immunsystem og herved deres evne til at gendanne væv, som er beskadiget.
β-glucaner findes allerede på markedet, og bruges som sygdomsforebyggende middel i for eksempel
yngelfoder. Selve mekanismen bag β-glucaners evne til at modulere fiskens immunsystem er dog ikke
kendt, hvorfor det er meget interessant, at Dominika Alicja Przybylska har fundet direkte effekter af β-
glucaner i forbindelse med sårheling. DTU Fødevareinstituttets fortsætter i to andre ph.d.-forløb
forskningen inden for området for at forstå, hvordan β-glucaner virker på molekylært niveau, og derved
kunne udnytte de naturlige kulhydraters fulde potentiale inden for hav- og dambrug.
Læs mere
Find mere information i Dominika Alicija Przybylskas ph.d.-afhandling: (link) Mucosal immune
response in common carp (Cyprinus carpio L.) Host pathogen interactions in relation to ß -glucan
stimulation.
Find også mere information om DTU Fødevareinstituttets aktiviteter inden for sundhedsfremmende
stoffer og bakterier
http://www.food.dtu.dk/Indsatsomraader/Ernaering/Sundhedsfremmende_stoffer_og_bakterier.aspx
Kontakt
Lektor Michael Engelbrecht Nielsen, mice@food.dtu.dk, tlf. 23 68 82 90

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Dominika biologiske alternativer til medicin v03

  • 1. Kort nyhed til DTU Fødevareinstituttets web Biologiske alternativer til medicinering af fisk Naturligt forekommende kulhydrater hos planter, bakterier og svampe kan bruges som helsefremmende biologiske alternativer og derved reducere brugen af medicin i fiskopdræt. Kulhydraterne bidrager til at reducere risikoen for sygdomme hos fisk og kan derfor være med til at forbedre fiskevelfærden. Det har Dominika Alicja Przybylska fra DTU Fødevareinstituttet vist i resultaterne fra sin ph.d.-afhandling. Kontrol af fiskesygdomme i produktionen har stor betydning for hav- og dambrugere for at sikre, at deres akvakulturproduktion er sund og rentabel og fiskevelfærden er optimal. Brug af medicin til behandling af almindelige sygdomme hos fisk er begrænsede og kostbare og i nogle tilfælde er en sådan behandling ikke mulig på grund af resistens i bakterier og svampe eller EU’s økologiforordninger, som fastlægger regler for produktion, import og mærkning af økologiske fødevarer. Sårhelingen sker hurtigere De såkaldte β-glucaner, som er naturligt forekommende kulhydrater hos planter, bakterier og svampe, har vist sig at få sårhelingen hos fisk til at ske hurtigere i sammenligning med fisk, der ikke er modtager disse kulhydrater. β-glucaner tilsat fiskenes foder, har vist sig at forbedre fiskenes immunsystem og herved deres evne til at gendanne væv, som er beskadiget. β-glucaner findes allerede på markedet, og bruges som sygdomsforebyggende middel i for eksempel yngelfoder. Selve mekanismen bag β-glucaners evne til at modulere fiskens immunsystem er dog ikke kendt, hvorfor det er meget interessant, at Dominika Alicja Przybylska har fundet direkte effekter af β- glucaner i forbindelse med sårheling. DTU Fødevareinstituttets fortsætter i to andre ph.d.-forløb forskningen inden for området for at forstå, hvordan β-glucaner virker på molekylært niveau, og derved kunne udnytte de naturlige kulhydraters fulde potentiale inden for hav- og dambrug. Læs mere Find mere information i Dominika Alicija Przybylskas ph.d.-afhandling: (link) Mucosal immune response in common carp (Cyprinus carpio L.) Host pathogen interactions in relation to ß -glucan stimulation. Find også mere information om DTU Fødevareinstituttets aktiviteter inden for sundhedsfremmende stoffer og bakterier http://www.food.dtu.dk/Indsatsomraader/Ernaering/Sundhedsfremmende_stoffer_og_bakterier.aspx Kontakt Lektor Michael Engelbrecht Nielsen, mice@food.dtu.dk, tlf. 23 68 82 90