鸡传染性支气管炎病是由一种冠状病毒而引起的急性呼吸道疾病,罹病的鸡潜伏期36小时,往往看不到症状就突然爆发,传染极快,迅速波及鸡群。病鸡呼吸困难,甩鼻,咳嗽,呼吸有罗音,怕冷,严重者则有伸颈张嘴喘气、腹泻等症状。不同鸡种、不同日 Avian infectious bronchitis is caused by a coronavirus acute respiratory disease, sick chicken incubation period of 36 hours, often do not see the symptoms of a sudden outbreak, rapid transmission, spread to flocks quickly. Sick chickens with dyspnea, rejection nose, cough, respiratory rales, cold, severe neck stretching mouth out gasping, diarrhea and other symptoms. Different chicken breeds, different days