Animal welfare and behaviour scientist Professor Paul McGreevy told the ABC there was no way the racing industry could defend the behaviour.
Racing Australia CEO Barry O’Farrell told ABC News on Friday morning the program showed “appalling” practices.
“(State racing CEO) are doing everything they can just to ensure the sport of racing thrives and flourishes, but also that responsibility for equine welfare is as high as possible within their jurisdictions,” he said. “Of course we condemn it.”
The ABC reported that despite racing's peak body implementing rules requiring the registration and tracking of horses from their birth to their retirement, racehorses are still being killed in slaughterhouses on a weekly basis.
Although the slaughter of racehorses is not illegal in Australia, it is against Racing NSW policy and rules, which state that all retired racehorses should be rehomed.
Viewers took to Twitter to vent their anger at the horse racing industry after the show went to air, with the #horseracingkills hashtag trending on Friday.
Aussie's were "shocked", "horrified" and "disgusted" at the state of the industry, with many calling for a boycott of horse racing altogether, and for those responsible to be held accountable for their actions.