Blowfly strike risk persists, sheep farmers warned

Despite falling levels, blowfly experts are warning sheep farmers that outbreaks remain possible.

The NADIS and Elanco blowfly risk forecast now shows a lower risk of blowfly strike, following a high number of outbreaks after a series of mini heat waves during the summer.

However, experts have warned farmers to keep their guards up, as cases of blowfly strike are still possible and being reported regularly.

The risk level is now low throughout most of the country, although farmers in previous years have still reported incidents well into November, with some even reaching into December.

Richard Wall, Professor of Zoology at Bristol University, explained: “In most areas the falling temperatures mean that the strike risk is now relatively low.

“However, blowflies are still active, and any prolonged warm autumn weather could still result in late season strikes, particularly with the onset of further rain. High levels of care are still required.”

According to an Elanco survey of 150 sheep farmers, carried out earlier this year via the National Farm Research Unit, 43% said that blowfly season now lasts longer than 20 weeks, with 37% experiencing cases later than they had previously.

Fiona Hutchings, Technical Vet at Elanco, added: “There are no guarantees when it comes to blowfly strike - with levels identified into November, an essential part of any strategy, has to ensure an early treatment that extends right through the long season.” For further information and to view the Elanco blowfly strike tracker please visit the website www.farmanimalhealth.co.uk/tracker