The Farm Transparency Project said it used hidden cameras and drone photography to record images of thoroughbred and standardbred horses being shot by rifle at the property.
Vision shown to Country News purports to show horses being shot multiple times before being brought down and then dragged into a truck.
The Farm Transparency Project is committed to ending horse racing and has campaigned against intensive animal industries.
It has a reputation for using concealed cameras to advance its claims of animal cruelty. Some of the complaints have resulted in criminal prosecutions.
In the latest complaint involving the equine industry, the Farm Transparency Project has described the destruction of horses as “savage”.
Country News has declined to publish the images due to their graphic nature.
The Farm Transparency Project said it had identified at least six, named former racehorses, using microchips.
The RSPCA and Food Safe Victoria are investigating the latest complaint.
Food Safe Victoria regulates the meat industry.
Farm Transparency Project spokesperson Harley McDonald-Eckersall said that the footage captured by investigators was the hidden reality behind every race.
“Each year thousands of racehorses ‘disappear’, quietly sold by owners and trainers,” she said.
“Despite assurances from the racing industry that they care about their horses, the reality is that even winners are only valued for as long as they make money.
“After that they are discarded, sent to be brutally slaughtered and cut up to feed racing greyhounds.”