Difference between revisions of "Lamb Dysentery"
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* Lamb dysentery is usually seen in lambs under 2 weeks of age. | * 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. | ** Related to being kept in a cold, dirty environment, with build-up of infection during the lambing season. | ||
| − | * Lambs may produce bloodstained [[ | + | * Lambs may produce bloodstained [[Diarrhoea|diarrhoea]] before death, but they often die before this effect is apparent. |
* Diagnosed by culturing contents of gut. | * Diagnosed by culturing contents of gut. | ||
Revision as of 19:22, 6 June 2010
(Enterotoxaemia with Blood)
- Clostridium perfringens causes very severe acute haemorrhagic enteritis.
- Usually affects young farm animals
- May also be seen in pets.
- Usually affects young farm animals
- Type B Clostridium perfringens infection of lambs leads to lamb dysentery.
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.