According to Intervet, a study undertaken in Germany last summer has proven the efficacy of Butox SWISH at killing the midges responsible for carrying the bluetongue virus, when applied monthly to cattle. The study showed that even brief contact between a midge and hair from a treated animal killed midges rapidly for up to four weeks post-treatment.

The standard dose, applied in the usual way (on the neck and topline of the animal) delivers full-body coverage of Butox SWISH’s deltamethrin, helped partly by its unique micronised formulation. The product is also highly lipophilic which means it binds onto the natural oil secretions of the coat helping to improve coverage.

The trial used six heifers (each weighing around 400kg) treated with 30ml Butox SWISH (the standard fly dose and method of application). Two un-treated heifers were also studied for comparison.

During the five week period, contact between midges and treated hair caused immediate paralysis, and the midges then died at varying intervals depending on contact time and the number of days post-treatment with Butox SWISH. The trial verified the application of Butox SWISH monthly at the standard dose for cattle.

Trial director, Professor Mehlhorn suggested that producers should be prepared to reduce vector contact by removing their breeding habitats and combining this with the use of a knock-down treatment like Butox SWISH, which is the only product of its type which has proven efficacy against midges. Used in conjunction with vaccination, these measures may not stop the disease entering the herd, but will help reduce the spread of disease.

PS: Whilst you're here, take a moment to see our latest job opportunities for vets.