Trials on The Application of cuitabl Program For Vaccination of Turkeys With Newcastle Disease Vaccine

Due to the occurrance of several epizootics of Newcastle disease in poultry flocks and the isolationof velogenic strains of the virus and the susceptibi- lity of turkey poults to infection by the ND diseasespecially if it is present near the infected chicken flocks. And due to the absence of refrences showinga studied programmes for vaccination of turkey against NDV. in Egypt. This work vs carried out to evaluatethe prog~~nes copnly used in vaccinating commercial turkeys flocks with newly comparative prQgr.ammes • Also following up of virus shedding and persistence of infection among turkey poults post challenge.Four experL~ents have been carried out:1xperiment l. Include vaccination programme as follows: The use of Hitchenner Bl on 5th day of age by thedipping method. The use of LaSota vaccine in W3.CC ina ting the samebirds on 19 days of age by the drinking watermethod. ,3) Intramuscular injection of the turkey poults