Studies on Newcastle Disease In Quails

The present study was designed to study: Firstly.1. a natural outbreak. ot N ewoastle disease amongquail on Qua.illa faxm in Giza in April 1981 .•Secondly: Effect of virus dosep the ro¥te of infection and ’age of qUail on the susoeptibility of qUail to a quail strain of yelogenic viscerotropic Newcastle disease virus.Thirdly .. Contact transnissioh of velagenic v.Lsc erot- ropicNewcastle disease virus from infected quail to healthy chickens and vice versaThe results.sachived can be suhnerized as follows:1. The outbreak strated in April 1981 and lasted one month. Morbidity was 60 % and mortality was about 30 %.The clinical signs observed were similar to tho~se in chic-kens~ Post~ortem lesions were mainly various degrees of haemorrhages in meninges and slight congestion along theintestinal tract.A virus was isolated from the inter.nal organs pooled from dise8.lj’ed quail, identified as Newcastle disease virusand typed as velogenicnon=viscerotropic strain~ The mean