Sydney Morning Herald | 500 pigs die from heat stress at NSW piggery Sydney Morning Herald About 500 pigs have died from heat stress at a piggery in the NSW Riverina region. An anonymous whistleblower told The Daily Advertiser this week that the tragedy occurred when an air-cooling system failed at the Pig Improvement Company's piggery in ... 'Ocean' of dead pigs: 500 animals bake to death |