PAKISTAN
VETERINARY
JOURNAL
     
 
previous page   Pak Vet J, 2000, 20(3): 139-141   next page
 
PATHOGENICITY OF AVIAN INFLUENZA VIRUS STRAIN H7N3 IN CHICKEN
M. Afzal, Ashiq H. Cheema and Khalid Naeem 

Animal Sciences Institute, National Agricultural Research Centre, Islamabad, Pakistan

Abstract   

    Pathogenicity of avian influenza virus AlChick/Pakistanll/95(H7N3) was studied on 30 to 63 days old cockerels. The virus strain was found to be highly pathogenic killing inoculated birds within 2 to 7 days and produced distinct pattern of organ involvement. Extensive proliferation of lining epithelium of larynx and trachea forming tall villi and lymphoid depletion in germinal centers in spleen were the important histological changes in addition to clinical findings and lesions usually attributed to avian influenza infection in chicken.    

Key words: Avian influenza virus, strain H Pathogenicity.

 
   

ISSN 0253-8318 (Print)
ISSN 2074-7764 (Online)



scopus
 
DOI
 
DOAJ SEAL