The aetiology of Bovine Pneumonia is multifactorial, stress and infectious agents both play a major role.
Stress is a major predisposing factor to Pneumonia outbreaks.
Transportation over long distances serves as a stressor as it may be associated with:
Additional stressors on cattle destined for feedlots are:
Mannheimia haemolytica and Pasteurella multocida are consistently isolated from the lungs of sick cattle. These pathogens are associated with a high mortality rate.
Other pathogens that may also be responsible in the aetiology of the disease include:
Courtesy of Inst. for Animal Health, Compton, UK
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The aetiology of Bovine Pneumonia is multifactorial.