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Saturday, January 7, 2012

Avian Intestinal Spirochaetosis



UK - The term avian intestinal spirochaetosis (AIS) refers to disease in chickens and sometimes other avian species


 associated with the presence of Brachyspira species spirochaetes in the large intestine, according to the Animal Health 


and Veterinary Laboratories Agency in their Veterinary Information Note.

Clinical Signs

In the UK the disease is mainly seen in layer chickens from approximately 20 weeks of age onwards, in which there are mild to


 moderate clinical signs typically including diarrhoea (particularly slimy or slightly frothy, caramel coloured droppings), pasty


 vents, faecal staining of egg shells and a drop in egg production, and the birds may appear lethargic. 

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