Pages: 1-7

Abstract

Samples were collected from 89 chicken flocks suffering from respiratory signs and/or nervous signs accompanied with high mortalities, in Qalubia, Sharkia, Menofia, Fayoum, Behira and Cairo governorates at the period from August 2014 to May 2015. These samples, were trachea, liver, spleen and cecal tonsils. Virus isolation and molecular identification were occurred from these collected samples. Results revealed that, positive percentage to Genotype VII of Newcastle disease virus (NDV) in Qalubia, Sharkia, Menofia, Fayoum, Behira and Cairo governorates were 31.42%; 21.74%; 37.5% ;25%; 25% and 40%; respectively. For prevention and control of such virus, it is recommended for further protective trial using different vaccination regimes for choosing the best protocol in order to control such pathotype under our Egyptian field conditions which needs further investigations.