Vicious Circle (Avian Tuberculosis), 1954

Color - Sound - 16 mm - 00:30:00 This picture portrays the avian type of tuberculosis, which causes an annual loss of several million dollars to owners of chickens and hogs. Although the disease is now most prevalent in the North-Central States, its spread is a threat to all farms in the United States where chickens are raised. As shown, detection of tuberculosis in poultry flocks is difficult and , when found prompt measures should be taken to eliminate the disease. Once tuberculosis is eliminated, it is recommended that, in all flocks maintained for egg and food production, the entire flock be replaced at least every 18 months, both to prevent recurrence of the disease and to maintain top efficiency of laying hens. In flocks maintained for breeding purposes, the tuberculin test should be used annually with prompt removal of reactors for slaughter, followed by thorough cleaning and disinfecting of premises where poultry is maintained. Since hogs contact the disease by their association with chickens, it is necessary to segregate them to avoid contamination.