warble fly การใช้

Adult warble flies are large, hairy, and bee-like and brown, orange, or yellow in color.
British farmers were ordered to use OPs on their cattle in the 1980s in an attempt to stem an epidemic of the parasite warble fly.
He suggested this cause might be Phosmet, a systemic organophosphate insecticide that was being spread along the spines of intensively farmed cows to eradicate warble fly.
A . There are several insects that have been called gadflies, most of them flies whose buzzing or biting or both annoy horses; the species include botflies and warble flies.
Dr . Heinz Muller of the federal veterinary bureau said : " We certainly used phosmet to prevent warble fly, although exclusively on pigs, and those pigs were slaughtered and rendered into cattle feed until 1992.