Lesions of velogenic viscerotropic Newcastle disease virus infection were more severe in broilers than pullets
نویسندگان
چکیده
منابع مشابه
Outbreak of Velogenic Viscerotropic Newcastle Disease in Broilers
This report describes an outbreak of an acute, highly lethal, Newcastle Disease (ND) in two broiler flocks that were intensively managed and vaccinated against Newcastle disease. The broiler flocks (325) were four weeks and (450) were six weeks old at the time of the outbreak. Clinical characteristics of the disease included a 100% morbidity, increasing high mortality i.e. 40 birds (day one), 7...
متن کاملViscerotropic velogenic Newcastle disease virus replication in feathers of infected chickens.
Newcastle disease viruses (NDVs) cause systemic diseases in chickens with high mortality. However, little is known about persistence of NDVs in contaminated tissues from infected birds. In this study, we examined viral replication in the feather pulp of chickens inoculated with viscerotropic velogenic NDV (vvNDV) genotype VII. Reverse transcription real-time PCR and immunohistochemistry were us...
متن کاملMolecular characterization of velogenic viscerotropic Ranikhet (Newcastle) disease virus from different outbreaks in desi chickens
AIM Diagnosis of velogenic viscerotropic Ranikhet disease from six different flocks of desi chicken in and around Mumbai by gross and histopathological examination, isolation of virus and molecular methods. MATERIALS AND METHODS A total of 25 carcasses (varying between 2 and 6 carcasses from each flock) of six different flocks of adult desi chicken were subjected to necropsy examination for d...
متن کاملImmunization with a Thermostable Newcastle Disease Virus K148/08 Strain Originated from Wild Mallard Duck Confers Protection against Lethal Viscerotropic Velogenic Newcastle Disease Virus Infection in Chickens
Newcastle disease (ND) is one of the most devastating poultry infections because of its worldwide distribution and accompanying economical threat. In the present study, we characterized the ND virus (NDV) K148/08 strain from wild mallard duck, with regard to safety, thermostability, immunogenicity, and protective efficacy against velogenic ND viral infection. The NDV K148/08 strain offered enha...
متن کاملCloning and expression of the HN gene from the velogenic viscerotropic Newcastle disease virus strain AF2240 in Sf9 insect cells.
The haemagglutinin-neuraminidase (HN) gene ofNewcastle disease virus (NDV) strain AF2240, amplifiedfrom the viral genomic RNA ( approximately 1.8 kb) was directionallycloned and inserted into a baculovirus expressionvector system. The recombinant glycoprotein expressedin Spodoptera frugiperda (Sf9) cellsshowed haemagglutinin (HA), neuraminidase (NA) andhemadsorption activities. HA activity was ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Animal Research
سال: 2019
ISSN: 0971-2119,0974-1844
DOI: 10.1080/09712119.2019.1598420