Cause: Poultry tuberculosis is a contagious chronic infectious disease caused by avian Mycobacterium tuberculosis. Widely distributed in all parts of the world, all birds can be infected, and pheasants are more susceptible to infection, causing greater harm to the pheasant breeding industry. The large number of Mycobacterium tuberculosis excreted from the intestinal ulcerative tuberculosis of the diseased brood is an important source of infection. Ingestion and contact can cause infection. Symptoms: The disease has a long incubation period. After pheasant infection, it takes 11 months to develop. The main symptoms are chronic progressive weight loss in sick chickens, plumage, malnutrition, depressed spirits, marked atrophy of pectoral muscles, and sternum protruding like a knife. If there is tuberculosis in the joints and bone marrow, the performance is claudication. The general course of illness can be from months to more than one year. Prevention: Since the treatment of this disease is slow and costly, the value of treatment is not great. Effective measures to prevent tuberculosis are oral administration of BCG. China Agricultural Network Editor
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