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Nematodirosis (N. battus)
GastrointestinalInfectious DiseaseParasiteOvineNew
Key Points
  • Nematodirosis is a gastrointestinal parasitic disease caused by Nematodirus battus
  • It mainly affects lambs at 6-12 weeks during their first grazing season
  • N. battus eggs require a prolonged cold period followed by warm temperatures to trigger synchronous hatching of infective larvae
  • The main clinical signs are acute onset diarrhoea, weight loss and dehydration
  • Diagnosis is mainly based on clinical presentation as FECs are unreliable in the early stages of infection
  • Anthelmintics are the mainstay of treatment
  • Pasture management and targeted treatments are key for prevention
Differential Diagnoses
  1. Coccidiosis
  2. Teledorsagiosis (T. circumcincta)
  3. Salmonellosis
  4. Nutritional scours
Overview
Aetiology
Clinical Signs
Diagnosis
Treatment
Prevention
Resources
Overview

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Aetiology

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Clinical Signs

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Diagnosis

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Treatment

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Prevention

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Resources

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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 →