Abstract:
The article includs the observations dates about clinical evolution and sings of the bursal disease in broiler and eggs production chickens flocks, also the gross lesions in internal organs. It was estabilised that more susceptible is 3-4 wk-old chickens. The very short (2- 4 days) after exposure. More significant clinical sings is: diarrhea, anorexia, depression, ruffled feathers, prostration and finally death. On necropsy around 95% of death chickens the cloacal bursa appears to la the primary target organ of the virus. The bursa increase in size and weight because of edema and hyperemia, hemorrhages in side of bursa, frequently hemorrhages are present in the thigh and pectoral muscles
