§ Sir Geoffrey Johnson SmithTo ask the Minister of Agriculture, Fisheries and Food when dairy farmers were first required by Government to treat their cattle with an organophosphate-based insecticide as an antidote to warble fly; and when this practice ceased. [24828]
§ Mrs. BrowningCompulsory treatment for cattle infested with warble fly was re-introduced in 1978 and is still required. Alternatives to organophosphate-based products have been available from October 1984, when the first ivermectin-based product was authorised.