It is not illegal to kill an animal in New Zealand as long as it is done humanely, which includes bludgeoning bobby calves with hefty objects, Mid Canterbury SPCA inspector John Keeley says.
But he added it was no longer a common practice in New Zealand.
He was commenting on recent allegations of animal abuse on a New Zealand-owned dairy company operating in Chile.
Images of workers slaughtering bobby calves by hitting them on the head and dumping the carcasses in open pits have shocked many in recent days. Allegations of throat slitting and starving have also surfaced.
Bobby calves are the unwanted product of the dairy industry, generally male calves unsuitable for beef production.