Veterinary Vista's wordmark logo.
Log In
Bovine Lungworm (D. viviparus)
Infectious DiseaseRespiratoryParasiteBovineNew
Key Points
  • Dictyocaulosis is a respiratory condition caused by the parasitic nematode, Dictyocaulus viviparus (bovine lungworm)
    • Infection leads to parasitic bronchitis, commonly known as ‘husk’
  • It’s primarily a disease of cattle, especially youngstock or naïve animals
  • Larvae thrive in wet, mild conditions and accumulate on pasture during the grazing season
  • Dyspnoea, a harsh cough, tachypnoea and weight loss are the main clinical signs
  • Diagnosis is based on clinical presentation as well as Baermann faecal analysis to detect larvae
  • Anthelmintics are the mainstay of treatment
  • Vaccination, good pasture management and regular monitoring are essential for preventing disease
Differential Diagnoses
  1. Acute bovine pulmonary emphysema and oedema
  2. Enzootic pneumonia
  3. Bovine respiratory syncytial virus (BRSV)
  4. Infectious bovine rhinotracheitis (IBR)
Overview
Aetiology
Clinical Signs
Diagnosis
Treatment
Prevention
Resources
Overview

Content Locked

Subscribe to Access
Aetiology

Content Locked

Subscribe to Access
Clinical Signs

Content Locked

Subscribe to Access
Diagnosis

Content Locked

Subscribe to Access
Treatment

Content Locked

Subscribe to Access
Prevention

Content Locked

Subscribe to Access
Resources

Content Locked

Subscribe to Access

Educational content only. This factsheet is for general veterinary education and is not a substitute for professional veterinary advice, diagnosis, or treatment. Not for use in an emergency — contact a veterinarian or emergency service. Full disclaimer →