Lamb Dysentery

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Revision as of 19:22, 6 June 2010 by Bara (talk | contribs) (Text replace - 'Intestine Diarrhoea - Pathology' to 'Diarrhoea')


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(Enterotoxaemia with Blood)

Clinical

  • Lamb dysentery is usually seen in lambs under 2 weeks of age.
    • Related to being kept in a cold, dirty environment, with build-up of infection during the lambing season.
  • Lambs may produce bloodstained diarrhoea before death, but they often die before this effect is apparent.
  • Diagnosed by culturing contents of gut.

Pathology

Gross
  • The gut is blown and distended with foamy ,bloody contents.
  • Sometimes ulceration with perforation and fibrinousperitonitis is seen.
  • Focal or diffuse congestion and haemorrhages.
Histological
  • Coagulative necrosis of villi.
  • Oedema.
  • Haemorrhage.
  • Influx of inflammatory cells in the lamina propria and submucosa.


Similar Conditions

  • Piglets show similar disease caused by Clostridium perfringens type C (and sometimes type B)
    • May look similar to a volvulus but with no twist present.
  • In adult sheep Clostridium perfringens type B infection causes Struck.
    • Enterotoxigenic gastritis.
    • Acute sudden death with haemorrhagic enteritis
    • Haemorrhagic enteritis is not as severe as in lambs, and tends to be more patchy.