The tracker, which Elanco produces with NADIS (National Animal Disease Information Service), highlights areas hit with blowfly strike in real-time, to provide a warning for farmers, veterinary surgeons and industry professionals.
The first reported incidents were in Hampshire, before spreading across Devon, West Sussex, and Buckinghamshire. Elanco says particularly severe cases include a flock in Dorset, in which 50% of a lamb group have been hit by blowfly strike. Latest reports are in northern England and some initial cases in Scotland.
The company says its blowfly risk forecast suggests that weather conditions from southern England and Wales to the Midlands mean that flies are now active, and females are laying eggs that could result in serious welfare and productivity issues.
Richard Wall, Professor of Zoology at Bristol University, said: "The timing and severity of blowfly strike is strongly influenced by the weather. This is a reminder to farmers that now is the time to act for early prevention. Delaying treatment not only costs the farm but risks the welfare and productivity of the flock."
Fiona Hutchings, Technical Vet at Elanco, said: "The costs of inaction when it comes to blowfly strike far outweigh the costs of protection. With 99% of farmers having suffered financial losses as a result of blowfly strike¹, the potential impact on your flock simply isn’t worth the risk. Farms need to take control — and take control early — by using a preventative IGR product with full fleece protection2."
Fiona added: "By the time symptoms show themselves, it’s often too late. It’s easy to overlook even one struck sheep, and blowfly strike can cause huge damage in very little time. In addition, using protection early reduces risk later in the season by ensuring a much lower fly count as the season progresses."
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