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Present Status of Infectious Bursal Disease in Chickens in Egypt /

Sabry ElSayed Omar Salem

Present Status of Infectious Bursal Disease in Chickens in Egypt / الوضع الحالى لمرض التهاب كيس فابريشيا المعدى فى الدجاج فى مصر Sabry ElSayed Omar Salem ; Supervised Mohamed Hussein Hassan Awaad , Mohamed Mohmoud Zaki , Abd El Rhman Kamal Khafagy - Cairo : Sabry ElSayed Omar Salem , 2006 - 215L : ill ; 30cm

Thesis (PH.D.) - Cairo University - Faculty Of Veterinary Medicine - Department Of Animal Diseases

flocks vaccinated against IBDThe results revealed that the IBD infection still a problem in the vaccinated flocksTwo forms of the disease still occur (clinical and subclinical forms) A major antigenic shift in IBD viruses has occurred in the field situation including classical , a typical classical , untypable variant and Del / E variant of IBDV (based on AC - ELISA) Revision of current vaccination programmes for control of both clinical and subclinical forms of the disease are requested



Chickens infections bursal present status