The Royal Ulster Agricultural Society (RUAS) has announced that all cattle and sheep exhibited in 2026 must be vaccinated against the bluetongue virus (BTV-3) under a strengthened animal-health policy.

The RUAS said the requirement is designed to safeguard livestock amid ongoing concerns about the spread of the virus. Exhibitors have been advised to consult their vets promptly, as immunity for all approved vaccines is only achieved several weeks after the final dose.

Three vaccines are available for both cattle and sheep, though timings differ depending on age and previous exposure.

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Goats are not subject to compulsory vaccination, but the society “strongly recommends” owners to consider it.