Effects of dietary supplementation of mannan-oligosaccharide on virus shedding in avian influenza (H9N2) challenged broilers

Isolation and Identification of Avian Influenza Virus H9N2 Subtype

The effect of the extracts of Echinacea purpurea and Sambucus nigra (black elderberry) on virus shedding in H9N2 avian influenza infected chickens

Previous studies have shown antiviral effect of Echinacea and elderberry preparations against human influenza viruses in vitro. To investigate the in vivo antiviral effect of these herbs on avian H9N2 influenza virus, amantadine and two standardized commercial extracts of Echinacea purpurea (EF) and Sambucus nigra (SAM) were used in broiler chickens infected with H9N2 strain of the virus. EF, S...

Serological Investigation of H9N2 Avian Influenza Virus in Slaughtered Water Buffaloes (Bubalus bubalis) in Khuzestan, Iran

The aim of the present was to evaluate the prevalence of H9N2-specific antibodies among water buffaloes (Bubalus bubalis). To this end, blood samples were obtained from 80 randomly selected water buffaloes, 40 cases of which were obtained in the winter months, and 40 cases were sampled in the spring months. The presence of H9N2-specific antibody was determined by hemaggl...

Co-infection of broilers with Ornithobacterium rhinotracheale and H9N2 avian influenza virus

BACKGROUND Since 2008, a progressive pneumonia has become prevalent in broilers and laying hens. This disease occurrs the first day after hatching and lasts more than 30 days, resulting in approximately 70% morbidity and 30% mortality in broilers. The objective of this study was to isolate and identify the pathogens that are responsible for the progressive pneumonia and establish an animal mode...

Virus shedding after H9N2 strain challenge of SPF Chickens immunized by an experimental Nano-Adjuvant and commercial oil emulsion avian influenza (H9N2) vaccines

Abstract Background and Aims: Vaccination of poultry has a major impact on the prevention and control of avian influenza viruses. Nanobiotechnology techniques provide a new approach for improvement of influenza vaccine efficacy. In this study, efficacy of an inactivated nano-adjuvant vaccine developed based on an endemic H9N2 virus was evaluated in SPF chickens. Materials and Methods: I...