Sol Elliott, Rachel Clifton, Fiona Lovatt, Rachael Tarlinton
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Survey to determine the farm-level impact of Schmallenberg virus during the 2023-2024 UK lambing season.
Background: This study aimed to assess the impacts of Schmallenberg virus (SBV) on the 2023/2024 UK lambing season.
Methods: An online survey was distributed to UK sheep farmers between February and May 2024. Responses were compared across SBV-confirmed, suspected and not suspected farms.
Results: Higher impacts on flock welfare, financial performance and farmer emotional wellbeing were reported on SBV-confirmed (n = 44) and SBV-suspected (n = 84) farms compared to not suspected farms (n = 101), and higher dystocia and dystocia-associated ewe deaths were reported on SBV-confirmed farms. Lamb mortality was higher than in previous SBV outbreaks in the UK. An earlier mating season was identified as a risk factor for SBV.
Limitations: Cross-sectional surveys are prone to recall bias, and the data accuracy depends on the accuracy of farm records. Farmers who experienced negative impacts of SBV may have been more likely to complete the survey. There is also a risk of selection bias due to the study population being an opportunistic rather than a random sample of UK sheep farmers.
Conclusion: This study confirms the significant impacts of SBV on the UK sheep industry, which are likely to be ongoing due to the cyclical re-emergence pattern of the virus.
期刊介绍：
Veterinary Record (branded as Vet Record) is the official journal of the British Veterinary Association (BVA) and has been published weekly since 1888. It contains news, opinion, letters, scientific reviews and original research papers and communications on a wide range of veterinary topics, along with disease surveillance reports, obituaries, careers information, business and innovation news and summaries of research papers in other journals. It is published on behalf of the BVA by BMJ Group.
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