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Bovine Parainfluenza - 3 (view source)
Revision as of 18:48, 13 October 2008
, 18:48, 13 October 2008no edit summary
*Cessation of [[Respiratory System General Introduction - Pathology#Mucociliary escalator|ciliary clearance]] and epithelial necrosis predisposes to secondary bacterial infections -> cough
*Cessation of [[Respiratory System General Introduction - Pathology#Mucociliary escalator|ciliary clearance]] and epithelial necrosis predisposes to secondary bacterial infections -> cough
*May cause [[Respiratory Viral Infections - Pathology#Parainfluenza- 3|rhinitis]] of cattle
*May cause [[Respiratory Viral Infections - Pathology#Parainfluenza- 3|rhinitis]] of cattle
====Diagnosis====
====Diagnosis====
*Diseased lung tissue from dead animals or centrifuged cells from lung lavage
*Diseased lung tissue from dead animals or centrifuged cells from lung lavage
**Temperature sensitive mutant that replicates at 34<sup>o</sup>C but not at 37<sup>o</sup>C
**Temperature sensitive mutant that replicates at 34<sup>o</sup>C but not at 37<sup>o</sup>C
**Re-infection is common
**Re-infection is common
====Secondary Concerns====
*With other agents causes [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of calves|calf pneumonia ]]
*Associated with poor management:
**Overcrowding
**Poor ventilation
**High humidity
**Deprivation of colostrum
**Stress caused by transport or mixing of stock