Dairy cows are the production machines and profit objects of cattle farms, but in the actual feeding management, cows will suffer from some chronic diseases because of the unfavorable supervision of cattle farm personnel, which will bring great economic losses to the cattle farms. Therefore, BALLYA remind: dairy cattle breeding must do a good job in the prevention and treatment of chronic diseases. Common respiratory diseases Bovine respiratory diseases are generally caused by the environment, such as excessive harmful gases in the cowshed, which lead to the respiratory tract being stimulated and damaged and infected by a virus, or because of the dry air, excessive dust in the air leading to bovine respiratory diseases. And some cattle respiratory diseases have high infectivity and fatality rate, so cattle breeding should prevent respiratory diseases. Common respiratory diseases in cattle are: Tuberculosis. The disease is a chronic consumptive infectious disease caused by Mycobacterium tuberculosis. Its pathological features are the formation of characteristic granuloma, caseous necrosis and calcified nodules in multiple tissues and organs of diseased cattle. The disease is a chronic process. The cattle show progressive emaciation, cough, and dyspnea, but their body temperature is generally normal. Infectious bovine pleuropneumonia. The chronic cattle with this disease mostly turn over from acute. The digestive function of diseased cattle is disordered and thin. Most diseased cattle have no obvious symptoms, but they are poisoned for a long time. The cattle were sensitive to palpation, and the lesion was located in the voiced area. Prevention and control: Strengthen feeding management and environmental monitoring, and regularly make sanitation and disinfection. Tuberculosis: Isotoxin callus, streptomycin, kanamycin, and rifampicin can be used to treat pulmonary tuberculosis. No therapeutic significance should be eliminated as soon as possible. There is no ideal vaccine for the disease. The best prevention and control strategy is to strengthen quarantine and surveillance to prevent the introduction of the disease and the spread of the epidemic. Infectious pleuropneumonia: Tylosin, kanamycin sulfate and other medicines can be used to treat infectious pleuropneumonia. Cattle diagnosed should be eliminated as soon as possible. The disease is mainly prevented. Cattle farms should not introduce cattle from epidemic areas, and imported cattle should be strictly quarantined. Bovine infectious pleuropneumonia attenuated vaccine inoculated once a year in cattle over 6 months of age can prevent the onset of the disease.