Enteritis, Parasitic

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Trichuris ovis in the sheep caecum (Courtesy of Bristol BioMed Image Archive)
Trichuris vulpis in the caecum (Courtesy of Bristol BioMed Image Archive)
Comparison- caecum unaffected and affected by Trichuris vulpis (Courtesy of Bristol BioMed Image Archive)
  • This is the most important condition causing cattarhal enteritis worldwide.
  • Seen mainly in grazing animals.
    • Especially in sheep - causes large production losses.
  • Particularly problematic since some parasites are resistant to anthelmintics.
  • A pre-patent period of 7-10 days is followed by the development of greenish diarrhoea.
    • The gut becomes filled with greenish soupy material.
    • Oedema and hyperaemia of mucosa occurs.
  • In young animals, parasites can cause serious disease and even death.