Clinical Evolution and Pathomorphological Caracteristics in Infectious Bursal Disease

摘要

The article includs the observations dates about clinical evolution and sings of thebursal 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 incubation period is very short (2-4 days) after exposure. More significant clinical sings is: diarrhea, anorexia, depression, ruffledfeathers, prostration and finally death. On necropsy around 95% of death chickens the cloacal bursaappears to la the primary target organ of the virus. The bursa increase in size and weight because ofedema and hyperemia, hemorrhages in side of bursa, frequently hemorrhages are present in the thighand pectoral muscles.