AIDAN O’Brien and Coolmore Stud have initiated legal proceedings against feed company Glanbia over contaminated feed which led to the withdrawal of all O’Brien’s intended runners on Prix de l’Arc de Triomphe day in 2020.

According to a report in The Irish Times, O’Brien, his son Donnacha and eight Coolmore-associated companies are suing the parent company of Gain equine nutrition over losses incurred by the enforced non-participation of 11 horses at the prestigious meeting in Paris.