Investigations are underway into a fire that ripped through a Waikato poultry farm yesterday killing 50,000 egg laying hens. The fire affected two of the twelve barns at the Zeagold farm in Orini, and vets are monitoring the health of the birds in the other barns. The farm is just a couple of years old, and was built to modern specifications – including cage-free housing for the hens and fire-retardant panels, which helped contain the fire’s spread. Zeagold Nutrition Chief Executive John Mckay has been on site today and says they still don’t know what caused the fire. The fire comes at a time when the country is experiencing an egg shortage however the losses represent only 1.4 percent of the layer hen population nationally.