Lantbruks- och trädgårdsföretagarnas egen forskningsstiftelse finansierar behovsdriven forskning för svenska förhållanden.
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Lantbruks- och trädgårdsföretagarnas egen forskningsstiftelse finansierar behovsdriven forskning för svenska förhållanden.
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Status: | Pågående |
Projektnummer: | O-22-20-757 |
Kategori: | Focus area | Food & feed |
Branschområden: | Poultry |
Ansökningsår: | 2022 |
Huvudsökande: | Ásgeir Ástvaldsson |
Organisation: | Statens Veterinärmedicinska Anstalt (SVA) |
E-postadress: | asgeir.astvaldsson@sva.se |
Telefon: | +46736330442 |
Medsökande: | Hanna Skarin |
Medsökande: | Ann Lindberg |
Globally, Campylobacter is the most common cause of bacterial gastroenteritis in humans. Outbreaks of campylobacteriosis have been reported in Sweden in the recent years, despite measures being applied by the poultry industry. Our purpose is to investigate Campylobacter strains from Swedish outbreaks and identify factors that allow these strains to spread and persist in the production chain. Phenotypic characteristics will be defined and compared to non-outbreak strains and coupled to genotypic characteristics to investigate what is behind their success to cause outbreaks in humans. We will investigate tolerance and adaption mechanisms against various stress factors, e.g. dehydration, oxygen and freezing, and the ability to cause infection in human epithelial cells. The findings will contribute scientific knowledge on why certain strains are more likely to cause outbreaks and form recommendations for prevention of Campylobacter in the broiler chicken production.
Infektion orsakad av Campylobacter är den mest rapporterade bakteriella magtarminfektionen i världen. Under åren 2014-2018 hade vi årliga campylobacterutbrott i Sverige under vinterhalvåret. Samtliga av utbrotten visade sig vara kopplade till inhemsk kyckling och ha orsakats av enskilda stammar som spridit sig bland kycklingproducenter, vidare till livsmedel och till slut smittat många människor. Detta projekt ämnar utreda vilka fysiologiska egenskaper som skapar utbrottsstammar av Campylobacter. Egenskaper som t.ex. tolerans mot torka, frysning och syre samt förmåga att anpassa sig och överleva i miljön och att orsaka infektion i humana tarmceller kommer att undersökas. Egenskaper kommer undersökas på DNA och RNA-nivå för att öka förståelsen bakom dem. Förståelsen för vad som tillåter dessa stammar att bli dominerande och överleva genom produktionskedjan kommer användas för att ta fram rekommendationer om kycklinghantering för att förhindra framtida utbrott.
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Heat stress is expected to be of major concern in Swedish animal production systems in the future. The air temperatures in parts of Sweden are expected to correspond to today's temperatures in southern Europe, where livestock experience heat stress today. Excessive thermal load affects the welfare …
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