One of Australia's biggest racing operations has taken to social media to deny rumours that a stable runner has returned a cobalt positive.
Trainers David Hayes, Ben Hayes and Tom Dabernig have been the subject of allegations that one of their runners has returned an elevated reading to cobalt after a recent Sydney race.
Rumour mill going crazy. FACT: Lindsay Park DO NOT have a positive to Cobalt, or any other medication in Vic/NSW or anywhere else #fakenews
— Lindsay Park Racing (@lindsayparkrace) September 20, 2017
The rumour has been doing the rounds in the wake of a warning from Racing NSW stewards about the use of certain batches of feed, which are believed to have contributed to elevated cobalt readings in horses.
Stewards in NSW and Victoria also warned trainers about "custom-made" feed and supplements.
"Racing NSW Stewards are aware that some trainers are having manufacturers prepare custom-made horse feeds, feed additives, and/or supplements. It is understood that some manufacturers are not listing - a. all active constituents; and/or b. the concentration of all active constituents, on the labels of their custom-made products," a Racing NSW release said.
Racing NSW stewards also announced confirmed findings of an elevated cobalt level in a urine sample taken from the Ron Quinton-trained Imanui in August.
Stewards are investigating the circumstances around the Imanui test results.