Home Lechuza Caracas Lechuza Caracas Nothing to fear from selenium in UK horse feeds News that an overdose of selenium probably caused the death of 21 polo ponies in America has prompted feed manufacturers and vets to reassure owners that their animals are not at risk Merial denies involvement of Biodyl in Lechuza polo pony deaths A spokesman for Merial has today denied any link to the deaths of 21 ponies in Palm Beach on 19 April, saying the pharmacy that has claimed responsibility was trying to replicate Biodyl Selenium named as likely cause of Lechuza polo pony deaths A trace mineral commonly used in horse feed but fatal in large doses is probably behind the deaths of 21 polo ponies in Florida, says state vet US Polo Association to bring in doping rules after pony deaths After 21 polo ponies from the Lechuza Caracas team died in Florida last week, the USPA says it will examine 'equine safety issues' in polo Security stepped up in Kentucky after death of polo ponies Security at this weekend’s Rolex Kentucky three-day event is to be stepped up following the sudden death of at least 21 polo ponies in Florida on Sunday Twenty one polo ponies die from mystery illness in Florida Twenty one polo ponies from the Venezuelan polo team Lechuza Caracas have died from a mystery illness at the US Open Polo Championships at International Polo Club Palm Beach