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Pathological diagnosis of infectious bursal disease in 24 weeks old vaccinated commercial laying hens in Kagarko, Nigeria: a case report


Journal of Dairy, Veterinary & Animal Research
Ogbe AO,1 Audu  Z,2 Kwaja EZ3

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Abstract

Infectious  bursal  disease  (Gumboro  disease)  was  diagnosed  in  24  weeks  old  vaccinated  commercial  laying  hens.  Clinical  signs  observed  were  severe  depression,  greenish-white diarrhea and high mortality. Postmortem findings observed were ruffled feathers, congestion  of  the  lungs,  enlarged  kidneys,  enlarged  spleens,  congested  ovarian  follicles,  pale  livers,  haemorrhages  of  the  mucosa  of  the  proventriculus  and  ventricular  junction,  enlarged,  oedematous  and  haemorrhagic  bursa  of  Fabricius  and  haemorrhages  of  caecal  tonsils.  Histopathology  findings  showed  severe  congestion  of  kidneys,  presence  of red  blood  cells  in  the  interstitial  spaces,  tubular  degenerative  necrosis  with  dissolution  of  nuclear  material,  glomerular  atrophy  and  increase  in  capsular  spaces.  There  was  severe follicular inflammation of the bursa of Fabricius evident by massive presence of inflammatory cells. Infectious bursal disease was diagnosed based on the gross pathological and histopathological findings. King herbs was administered for 5 days at dose rate 2ml/Lin  the  birds  drinking  water  ad-lib  and  the  client  was  advised  to  isolate  and  treat  the  sick  birds with the drug and to enforce strict biosecurity measures. There was no mortality after the treatments.

Keywords

gumboro disease, gross pathology, histopathology, laying hens

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