The ISU Poultry Farm is located on South State Street approximately 3 miles southwest of the main campus. It is part of the teaching farm complex that also includes the beef, sheep, and swine teaching units. The unit is utilized for teaching and research activities with broilers, layers, turkeys, and other avian species. At least six courses annually use the farm either directly or indirectly. Four animal science faculty and a number of faculty from other departments in the college of agriculture and from the National Animal Disease center utilize the birds and farm facilities for their research. The farm continues to maintain the oldest inbred line of chickens in the world. This line dates back to 1925. The Department of Homeland Security recently deemed the inbred lines of chickens maintained at the farm as essential to the Department of Agriculture.