The lung is the largest surface of the body that is in direct contact with the environment. During natural respiration, the airways transfer large volumes of air contaminated with contaminants and infectious agents. Respiratory diseases of large animals are caused by a combination of contagious and predisposing factors such as stress from weaning or transportation, unfavorable weather, and maintenance in an environment with poor ventilation.
The treatment of respiratory diseases depends primarily on the cause of the disease. It includes blood oxygenation and excretion of carbon dioxide, relieving inflammation, treating infectious agents, relieving bronchoconstriction, and supportive care.
Also, ways to prevent and control respiratory diseases include reducing exposure to infectious or physical agents, increasing intrinsic resistance through attention to nutrition, maintenance, livestock welfare, and rising acquired resistance through vaccination.