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Brachyspira spp. and avian intestinal spirochaetosis: anepidemiological review

Published online by Cambridge University Press:  05 September 2013

G.A. MEDHANIE ,
S.A. MCEWEN ,
D. SLAVIC  and
M.T. GUERIN
G.A. MEDHANIE*
Affiliation:
Dept. of Population Medicine, University of Guelph, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada
S.A. MCEWEN
Affiliation:
Dept. of Population Medicine, University of Guelph, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada
D. SLAVIC
Affiliation:
Animal Health Laboratory, Laboratory Services Division, University of Guelph, Box 3612, Guelph, ON, N1H 6R8, Canada
M.T. GUERIN
Affiliation:
Dept. of Population Medicine, University of Guelph, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada
*
Corresponding author: gasmelas@uoguelph.ca
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Abstract

Avian intestinal spirochaetosis (AIS) is primarily a disease of layer and broilerbreeder chickens exhibited by delayed and/or reduced egg production, increasedmortality, weight loss, and chronic diarrhoea. This disease is of concern to theegg industry because of the economic impact of reduced production and downgrading of eggs due to faecal-stained shells. Avian intestinal spirochaetosis iscaused by pathogenic Brachyspira spp. Thisreview summarises the species of Brachyspira that have been associated with AISand provides an overview of epidemiological studies that have investigatedprevalence, risk factors, and preventive measures for Brachyspira spp.

Keywords

avian intestinal spirochaetosisBrachyspirapoultrychickensprevalencerisk factors
Type
Review Article
Information
World's Poultry Science Journal , Volume 69 , Issue 3 , September 2013 , pp. 541 - 552
Copyright
Copyright © World's Poultry Science Association 2013

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