"The Ontario Hatchery and Supply Flock policy assists in ensuring that Ontario hatchery supply flocks continue to serve as a reliable source of poultry, and that hatching eggs and Ontario hatcheries maintain high standards of sanitation and disease prevention. The Lead Poultry Veterinarian with the Ministry of Agriculture, Food and Rural Affairs oversees this monitoring program. This dataset includes test results from the disease monitoring program. Data is tested and collected by the program's joint partner, the Animal Health Laboratory with the University of Guelph."