Bovine and ovine respiratory disease Flashcards
What are the main pathogens of enzootic calf pneumonia?
Para-influenza 3 Bovine herpes virus 1 (BHV-1/IBR) BVD Bovine respiratory syncytial virus Mycoplasma Mannheimia haemolytica (used to be pasteurella) Pasteurella multocida Histophilus somni
What are the clinical signs of enzootic calf pneumonia?
Coughing
Clear-mucopurulent nasal discharge
How is enzootic pneumonia in calves diagnosed?
Wisconsin Madison Calf Respiratory Scoring chart
BAL
Ig detection
ELISA
How do you treat enzootic calf pneumonia?
Oxytetracycline - antibiotic
NSAIDs - meloxicam, florfenicol(nuflor)
How do you prevent enzootic calf pneumonia?
Rispoval vaccine
Housing and management
What is another name for pasteurellosis?
Shipping fever in cows
What bacterial pathogens cause pasteurellosis/shipping fever?
Mannheimia haemolytica
Pasteurella multocida
Histophilus somni
Where are pathogens of pneumonic pasteurellosis found?
Nasal cavity of healthy carriers
How is pneumonic pasteurellosis diagnosed?
TW/BAL, tonsillar/nasal isolates, paired serology
How is pneumonic pasteurellosis treated in both cows and sheep?
Oxytetracycline +/- NSAIDs - same as calf treatment
Where is BHV-1 found?
Latency in trigeminal/siatic n.
Stress reactivation
What changes does BHV-1 cause in cows resp tract?
Reduced mucociliary clearance
Inflamed mucosa
Bacterial colonization of the lung
Impaired WBC function
What are some of the diseases that BHV-1 causes?
Infectious bovine rhinotracheitis
Infectious pustular vulvovaginitis
Infectious pustular balanoposthitis
Abortion
How is infectious bovine rhinotracheitis treated?
Antibiotics - control secondary infection
Vaccination - in outbreak
What is bovine farmers lung
Extrinsic allergic alveolitis – hypersensitivity to fungal spores & bacterial antigens
Both in cows and people
