Ten spring carnival raiders on the centre of a feed contamination scare have been cleared to race after returning detrimental check outcomes to Zilpaterol.
It was feared the worldwide horses, from the stables of Irish trainers Aidan and Joseph O’Brien, might have ingested the banned substance by a suspected batch of affected feed.
The daddy and son trainers scratched runners from races in Europe final weekend after being made conscious of the potential concern.
Racing Victoria stewards carried out out of competitors testing on the horses, who included the highly-rated Anthony Van Dyck and Melbourne Cup fancy Tiger Moth.
All check outcomes got here again detrimental to Zilpaterol on Friday.