The NHA laboratory has observed, in some racehorse specimens emanating countrywide, traces of a substance which may be indicative of Zilpaterol.

Zilpaterol is a chemical substance which is commercially used in South Africa in feed for cattle destined for meat production. It is reported that this substance is harmful to horses and can result in adverse side effects. As such the NHA is monitoring the situation with reference to the NHA Rules.

Racehorse owners, trainers and breeders are urged to take precautionary steps to monitor the feed which is sourced for their horses and that it is obtained/ produced under conditions which would not result in Zilpaterol being present. It is for this reason that commercial chemical fertilizers are preferable in the growing of feed crops destined for horses.

For more information please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it.