VACCINATION OF CHICKS WITH EXPERIMENTAL NEWCASTLE DISEASE AND AVIAN INFLUENZA OIL-EMULSION VACCINES BY IN OVO INOCULATION

摘要

The immunologic efficacy of inactivated oil-emulsion vaccines against Newcastle disease (ND) and avian influenza (AI) by use of embryo vaccination technology was evaluated. The vaccine antigens were prepared from LaSota strain of ND and H9N2 strain of AI viruses. These antigens were emulsified with an oil adjuvant. 18-day-old embryonated eggs from Aryan broiler breeder were divided into three groups and were delivered inactivated oil-ND and -AI. Group 3 was considered as unvaccinated control. After incubation period, no significant difference (P