Trainer Ian McInnes has been banned for three years after one of his racehorses was found to have been denerved.
Commando Scott had a biaxial neurectomy to his right hindleg in July 2008. But the horse ran nine times between May and September 2009, which is against the Rules of racing.
A British Horseracing Authority (BHA) disciplinary enquiry on 10 June found McInnes guilty of “failing to conduct his business with reasonable care and skill”.
He was given a further six-month ban for misleading BHA investigating officers.
The disciplinary panel said he had “recklessly disregarded the welfare” of the horse.
Former trainer Howard Johnson was banned in 2011 after his horse Striking Article was found to have run eight times following a neurectomy.