Monreal G, Hess M
Institut für Geflügelkrankheiten, Freien Universität Berlin.
Tierarztl Prax. 1994 Aug;22(4):364-7.
In the last years avian adenoviruses have caused diseases with similar symptoms and high losses in four countries. The causative viruses could be grouped by cross-neutralization tests and restriction enzyme analysis into four serotypes. Within the serotypes there exist strains with pathogenic properties as well as strains without pathogenicity. Epidemiologic investigations demonstrated that not only immunosuppression or co-infections produce diseases after adenovirus infections. Vertical transmission of the virus from parent stocks and deficiency of specific maternal antibodies in the chickens contribute to the development of diseases. Parent stocks, which were infected with different serotypes of adenovirus during their rearing period, produce chickens with maternal antibodies. These chickens are protected against early infections with avian adenoviruses.
在过去几年中，禽腺病毒在四个国家引发了症状相似且损失惨重的疾病。通过交叉中和试验和限制性内切酶分析，致病病毒可分为四种血清型。在这些血清型中，既有具有致病特性的毒株，也有不具致病性的毒株。流行病学调查表明，腺病毒感染后，不仅免疫抑制或混合感染会引发疾病。病毒从亲代种鸡垂直传播以及雏鸡体内特异性母源抗体的缺乏也会促使疾病的发生。在育雏期感染不同血清型腺病毒的亲代种鸡会产出带有母源抗体的雏鸡。这些雏鸡可抵御禽腺病毒的早期感染。
