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Infectious typhlitis in chickens caused by spirochetes.
F G Davelaar1, H F Smit, K Hovind-Hougen
1Department of Poultry Diseases, State University of Utrecht, Doom, The Netherlands.
Avian Pathology : Journal of the W.V.P.A
|January 1, 1986
Summary
A novel spirochete causing diarrhea and growth retardation in chickens was identified. This finding suggests a potential link between avian intestinal spirochetes and swine dysentery.
Area of Science:
- Veterinary Microbiology
- Avian Pathology
- Bacteriology
Background:
- Diarrhea in laying hens can significantly impact flock health and productivity.
- Intestinal spirochetes are known pathogens, particularly in swine (swine dysentery).
- The role of spirochetes in avian enteric diseases requires further investigation.
Purpose of the Study:
- To identify and characterize a spirochete isolated from diarrheic laying hens.
- To experimentally induce disease in chickens using the isolated spirochete.
- To compare the avian isolate with Treponema hyodysenteriae and discuss potential epidemiological links.
Main Methods:
- Detection of spirochetes in caecal mucosa using fluorescent antiserum.
- Isolation and pure culture of the spirochete.
- Experimental infection of chickens with the isolate or affected intestinal contents.
- Clinical, pathological, and microbiological assessments.
Main Results:
- A weakly hemolytic spirochete was isolated from diarrheic hens.
- Experimental infection caused diarrhea, growth retardation, and typhlitis in chickens.
- The isolated spirochete exhibited distinct characteristics compared to Treponema hyodysenteriae.
Conclusions:
- A distinct intestinal spirochete can cause enteric disease in chickens.
- The pathological findings in chickens resemble milder forms of swine dysentery.
- Further research is needed to elucidate the epidemiological significance of avian intestinal spirochetes in relation to swine dysentery.
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