PREVALENCE OF BEAK AND SHANK NECROSIS IN CROSS-BRED CHICKENS | ||||
| Kafrelsheikh Veterinary Medical Journal | ||||
| Article 6, Volume 7, Issue 1, May 2009, Page 82-94 PDF (761.8 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/kvmj.2009.107142 | ||||
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| Authors | ||||
Moshira El-Abasy  1; Amal Youssef2; Abdel-Gelil El-Gohary1
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| 1Department of Poultry Diseases, Faculty of Veterinary Medicine, Kafrelsheikh University | ||||
| 2Animal Health Research Institute, Dokki | ||||
| Abstract | ||||
| The anaerobic, Gram negative, filamentous bacteria associated with severe beak and shank necrosis in chickens was identified as Fusobacterium necrophorum (F. necrophorum). Bacteriological isolation from affected beak, liver and shank revealed a single morphological type of Gram negative, filamentous bacterium within the dermis of the affected beak and shank of the fowl. A hemagglutination test for identification of F. necrophorum was described. The antibiogram of the isolated strains was investigated. Beak and shank necrosis occur in 56% of chickens. The mortality was 2-13%. Characterestic gross lesions of affected chickens were swelling and necrosis of the beak, curvature of the upper mandible with necrosis of the lower mandible and shanks. Histopathologically, there were hyperkeratosis and keratolysis in epidermis of the beak with infiltration of rod-shaped microorganisms in dermal regions suffered from coagulative necrosis. The epidermis of the affected shanks showed hyperkeratosis, hyperplastic changes and coagulative necrosis of the underlying tissue intangled with bacteria. | ||||
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| Keywords | ||||
| BEAK; SHANK; NECROSIS; CROSS-BRED CHICKENS | ||||
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