Goodwin M A, Waltman W D
Georgia Poultry Laboratory, Oakwood 30566.
Avian Dis. 1994 Apr-Jun;38(2):376-8.
Chickens with swollen heads generally are said to have swollen head syndrome. In this retrospective study, 16 accessions of young chickens during 1992 had "swollen heads." Clinical signs and lesions were accompanied by infection with multiple viruses, bacteria, and Cryptosporidium baileyi. The fact that almost half of the cases of chickens with swollen heads occurred in one broiler-producing company and predictably within 14 days post-vaccination suggests that management factors might be instrumental in inducing the incidence of swollen heads.
头部肿胀的鸡通常被认为患有肿头综合征。在这项回顾性研究中，1992年期间有16批幼鸡出现“头部肿胀”。临床症状和病变伴有多种病毒、细菌及贝氏隐孢子虫感染。几乎一半的肿头鸡病例发生在一家肉鸡生产公司，且可预测地发生在接种疫苗后14天内，这一事实表明管理因素可能对肿头发病率的诱导起作用。
