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Toxicoinfectious botulism in commercial caponized chickens

Avian Diseases

Abstract has subscript/superscript to be fixed
By:
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DOI: 10.1637/7330-011805

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Abstract

During the summer of 2003, two flocks of commercial broiler chickens experienced unusually high death losses following caponizing at 3 wk of age and again between 8 and 14 wk of age. In September, fifteen 11-wk-old live capons were submitted to the Iowa State University Veterinary Diagnostic Laboratory for assistance. In both flocks, the second episode of elevated mortality was associated with incoordination, flaccid paralysis of leg, wing, and neck muscles, a recumbent body posture characterized by neck extension, and diarrhea. No macroscopic or microscopic lesions were detected in affected chickens. Hearts containing clotted blood and ceca were submitted to the National Wildlife Health Center in Madison, WI. Type C botulinum toxin was identified in heart blood and ceca by mouse bioassay tests. Enzyme-linked immunosorbent assay tests on heart blood samples were also positive for type C botulinum toxin. Clostridium botulinum was isolated from the ceca and genes encoding type C botulinum toxin were detected in cecal contents by a polymerase chain reaction test. Chickens are less susceptible to botulism as they age, and this disease has not previously been documented in broilers as old as 14 wk of age. Wound contamination by spores of C. botulinum may have contributed to the unusually high death losses following caponizing.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Toxicoinfectious botulism in commercial caponized chickens
Series title:
Avian Diseases
DOI:
10.1637/7330-011805
Volume
49
Issue:
2
Year Published:
2005
Language:
English
Publisher:
American Association of Avian Pathologists
Publisher location:
Jacksonville, FL
Contributing office(s):
National Wildlife Health Center
Description:
3 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Avian Diseases
First page:
301
Last page:
303
Number of Pages:
3