experimental infection of muscovy ducks with v4 strain of newcastle disease virus was undertaken to determine the response of the ducks to the virus and the possibility of virus transmission to ducks and chickens in village like conditions. twelve ducks were randomly and equally divided into three groups of control, inoculated and in-contact. additionally, the chickens were placed into two grou...

despite routine vaccination programs against newcastle disease (nd), sporadic cases have occasionally occurred that remain a constant threat to commercial poultry. ten isolates of newcastle disease viruses (ndv) from infected broiler chicken cases were obtained from various locations in fars province during 2009-2011 and genetically analyzed using reverse transcription polymerase chain reaction...

background & aim: the recent study was conducted to investigate the effects of thyme extract in drinking water on immune response of broiler chickens. experimental:  a total of 245 day-old broiler chicks were purchased and 20 chicks were bled for determination maternal antibody and remaining chicks divided into 5 equal groups. chickens of group a, b and c received 0.1%, 0.15% and 0.2% ofthy...

BACKGROUND: Newcastle disease virus (NDV) is the causativeagent of the Newcastle disease (ND), a highly contagiousdisease in birds that causes significant economic losses to thepoultry industry worldwide. ND is endemic in Iran and outbreaksare reported regularly in commercial poultry flocks and differentspecies of birds. OBJECTIVES:The current study was carried outto characterize NDV based on p...

Newcastle Disease (ND) is a major viral disease in Indonesia. It is an RNA virus belongs to Paramyxovirinae. It is well known that RNA virus is easily to mutate. In some cases, this mutation could generate virulence alteration. It is noted that mutation of NDV which has avirulent amino acid sequence on the cleavage site, could mutate to be virulent Newcastle Disease Virus (NDV). It is needed to...

Highly pathogenic avian influenza H5N1 and Newcastle disease viral infections cause severe illness in chickens and vaccination is a strategic tool of controlling these diseases. Hence, this study was conducted to evaluate the efficacy of using both recombinant herpesvirus of turkey (rHVT-H5 and rHVT-F) vector vaccines at day-old, in the hatchery, under field conditions. Vaccinated chickens were...

background: newcastle disease virus (ndv) is the causativeagent of the newcastle disease (nd), a highly contagiousdisease in birds that causes significant economic losses to thepoultry industry worldwide. nd is endemic in iran and outbreaksare reported regularly in commercial poultry flocks and differentspecies of birds. objectives:the current study was carried outto characterize ndv based on p...

Newcastle disease is one of the most important diseases of poultry. It usually causes a great loss inpoultry industry and domestic village chickens. Since domestic chickens in villages are free ranging for food,the chance of their contact with wild birds that may act as reservoirs is high. To determine the role ofdomestic chickens in the epizootiology of Newcastle disease virus in villages of I...

Newcastle Disease is still endemic in Pakistan’s poultry industry and responsible for great economic losses and high mortalities. Avian Influenza Virus has been involved in production losses in past few years, with or without the association of Newcastle Disease in the field. Therefore, present study was planned to evaluate the cross protection between Avian Influenza Virus and Newcastle Diseas...