The RSPCA has condemned another horse death at a jumps racing meet in Victoria and says other serious cruelty reports should be investigated.

The horse, Try Pickle, crashed at the seventh jump and was euthanised with serious injuries in Casterton on July 5.

"We expect there to be a speedy, full and transparent investigation into all of the incidents that took place in Casterton on Sunday, including the reports of lacerations, lameness and choking down," RSPCA Victoria chief Liz Walker says in a statement.