National Veterinary Research and Quarantine Service, Anyang 430-824, Korea Department of Veterinary Medicine, Kangwon National University, Chunchon 200-701, Korea College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea College of Veterinary Medicine, Chungbuk National University, Cheongju 361-763, Korea College of Veterinary Medicine, Konkuk Univdersity, Seoul 143-701, K...

Background: Major histocompatibility complex (MHC) is one of the best characterized genetic regions controlling immune responses against vaccines. Identifying the association between MHC haplotypes and improved immune responses would be useful in genetic breeding strategies in animals. OBJECTIVES: MHC class II B genetic diversity and its association with humoral immune responses against Newcast...

I nactivated vaccines now are commonly-used tools to stimulate the immune systems of layers and breeders. For viral antigens, inactivated vaccines are used primarily to induce a prolonged antibody response in birds which have previously received live virus vaccines. For bacterial antigens, these vaccines are typically used in birds which have not previously been vaccinated with a live bacterial...

This paper describes the development of an in vitro assay to replace in vivo potency testing for the batch release of inactivated Newcastle Disease virus vaccines. The assay involves the extraction of inactivated antigen from oil emulsion vaccines, the most common adjuvant for poultry vaccines. An enzyme-linked immunosorbent assay (ELISA) is used to quantify the hemagglutininneuraminidase (HN) ...

The purpose of this study is investigate Differentiation Between Vaccinal and Iranian Virulent Isolates of Newcastle Disease Virus based on F Region Genotyping by HRM Analysis. Discrimination of circulating virulent strains of Newcastle Disease Virus (NDV) from low pathogenic and vaccine stains is the basis for implementation of strategies to control and eradication of that aims at the eradicat...

Background and Aims: The objective of this study was to investigate the effects of Newcastle Disease and Infectious Bronchitis vaccination programs in chickens. Materials and Methods and Results: In the present study, 225 day-old broiler chicks divided into 5 groups. The groups were submitted to vaccinations, except for the non-vaccinated control group. The chickens in the groups 1 were kept as...

Rural poultry farming is common in the Northern provinces. Similar to commercial poultry, rural poultry is susceptible to most infectious diseases. In addition, by increasing the density of poultry farming, the probability of disease incidences has been increased. Newcastle disease is the most highly infectious disease which is endemic in Iran and causes outbreaks among commercial and rural pou...