JMM Profile: Brachyspira species: the causative agent of Avian Intestinal Spirochaetosis
Open Access
- 26 September 2022
- journal article
- research article
- Published by Microbiology Society in Journal of Medical Microbiology
- Vol. 71 (9), 001495
- https://doi.org/10.1099/jmm.0.001495
Abstract
The genus Brachyspira includes nine officially recognised species, several of which are pathogenic to mammals and birds. B. pilosicoli, B. intermedia, and B. alvinipulli are the causative agents of avian intestinal spirochaetosis (AIS), a gastrointestinal disease in poultry caused by the colonisation of the caeca and/ or colo-rectum by Brachyspira . AIS primarily affects layer hens and broiler breeders over the age of 15 weeks. The severity of symptoms can vary but typically presents as reduced growth rates, delayed onset of lay, reduced egg production, faecally stained eggs, and diarrhoea. This disease is estimated to cost the UK laying industry £18 million per annum. Brachyspira colonisation in humans is common in populations from developing countries and HIV-positive patients; however, it is rarely investigated as a human pathogen.Keywords
Funding Information
- British Egg Marketing Board
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