Bölüm anahatları
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Sudden dietary changes, weaning, cold, drafts, dampness, dust, high levels of ammonia, poor ventilation in general, and the mixing of widely divergent age groups all play a role in respiratory disease in groups of animals. Stress and mixing of animals from several sources should be avoided or minimized. Establishing individual animal identification, making accurate clinical and postmortem diagnoses, and maintaining a record system of diagnosis and treatment are important to minimize or control outbreaks of pneumonia. Transportation over long distances is another stress factor that plays a major role in the pathogenesis of respiratory infections in large animals.
