Results: 8

Clinico-pathological assessment of virulent Newcastle Disease Virus in ducks

Braz. j. biol; 84 (), 2024
Abstract Newcastle disease (ND) is an infectious, highly contagious and lethal disease of avian species. It is considered that ducks are natural reservoir or carrier for Newcastle disease virus (NDV) and are resistant against different strains of NDV. Current study was designed to evaluate the pathogenes...

Preparation and evaluation of formalized bivalent Newcastle and Salmonella poultry vaccine

This study was conducted to prepare and evaluate the potency of different inactivated vaccine formulations that protect chickens against Salmonella Enteritidis and Newcastle disease virus using Montanide as adjuvant. Protection and the humoral immune response of prepared vaccines against Salmonella Enter...

Molecular diagnosis of avian viruses in grassland passerines and captive yellow cardinals Gubernatrix cristata in Brazil

Pesqui. vet. bras; 41 (), 2021
Avian influenza viruses (AIVs), Newcastle disease virus (NDV), West Nile virus (WNV), adenovirus (AV) and herpesvirus (HV) play an important role in the health of human and animal populations. However, knowledge of the prevalence of these viruses in wild birds is restricted to some groups (e.g. shorebird...

The effect of Spirulina algae on the immune response of SPF chickens to commercial inactivated Newcastle vaccine in poultry

The objective of this study was to investigate the effects of Spirulina platensis (SP) powder supplementation on immune response in SPF chickens. For this purpose, 120 SPF chicks were randomly clustered into six groups consisting of 20 birds each which assigned to five groups vaccinated by commercial ina...

Monitoring of Newcastle disease in poultry at migratory birds landing sites: Mangue Seco and Cacha Pregos between 2013 and 2014

Arq. Inst. Biol; 87 (), 2020
The poultry industry has been considered one of the most efficient agricultural activities, placing Brazil in the ranking of the largest producers of chicken meat. However, a threat to the poultry production chain is the entrance of Newcastle disease virus (NDV) in the country, which would bring huge eco...

Phylogenetic and pathotypic characterization of newcastle disease virus in Tibetan chickens, China

Pesqui. vet. bras; 38 (1), 2018
Chickens are considered to be potential reservoirs of Newcastle disease virus (NDV). In this study, six Newcastle disease virus strains were isolated and characterized in Tibetan chickens. The HN gene was sequenced, and phylogenetic relationship to reference strains was studied. The phylogenetic analysis...

Expression of Hemagglutinin-Neuraminidase and fusion epitopes of Newcastle Disease Virus in transgenic tobacco

Electron. j. biotechnol; 19 (4), 2016
Background: Newcastle disease is an important avian infectious disease that brings about vast economic damage for poultry industry. Transgenic plants represent a cost-effective system for the production of therapeutic proteins and are widely used for the production of poultry vaccines. In an attempt to d...