Eighty piglets were killed when a ‘raging inferno’ tore through a livestock building at a Sheffield farm.
The eight-week-old animals died as the blaze ripped through the shed they were in at Povey Farm, Littlewood Lane, Norton.
An investigation has been launched to discover the cause of the fire.
The large white landrace pigs were worth around £4,000 and damage to the building has been put at £20,000.
Sheffield firm Moss Valley Fine Meats owns the 240-acre family run farm.
Stephen Thompson, owner of the award-winning firm, said:“We were doing some building work on the building, just repairs to it really, and kept checking there was nothing wrong and within two minutes it went from nothing wrong to a blazing inferno.
“We’re not sure what happened, it must have been a spark somewhere.
“Nothing electrical was been used during repair work at the time. It was just one building affected really so nothing too bad.
“On the farm there are about 2,000 pigs but the buildings are mostly separate so if something does happen its an outbuilding here and there.
“It’s very upsetting and there will be a lot of work involved. It is a knock to the system.”
Three fire engines from Dronfield, Low Edges and Mansfield Road attended the blaze at 6.10pm on Sunday.
Crews used jets and breathing apparatus to put out the fire by 7.10pm.
Stephen said: “They did a sterling job.”
A South Yorkshire fire service spokesman said an investigation into the cause of the blaze was under way.