Rapid Reliable EID50 Determination for live Newcastle Disease Viruses and Vaccines
نویسندگان
چکیده
منابع مشابه
The effect of mixed live vaccines of Newcastle disease and infectious bronchitis on systemic and local antibody responses in chickens
In the present study, 360 male day-old broiler chicks were used to determine the effect of mixed livevaccines of Newcastle disease (ND) and infectious bronchitis (IB) on serum and local antibody responses toIB. Chicks were randomly divided into 12 treatment groups of 3 replicates and reared for 40 days on floorpens. Groups 1 to 5 received mixed ND and IB vaccine. Groups 7 to 11 received IB vacc...
متن کاملThermostable Newcastle Disease Vaccines
Robust vaccines are required to protect village chickens against Newcastle disease. Thermostable vaccines derived from avirulent Australian strains of Newcastle disease virus (strains V4 and I-2) have proved successful for this purpose. These vaccines have been developed through ACIAR projects and have been adopted by other international aid agencies. It is now possible to offer integrated work...
متن کاملEffect of the Commercial Mixed Live Newcastle Disease and Infectious Bronchitis Vaccines and the Use of Two Separate Vaccines Given Simultaneously on Systemic Antibody Responses
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...
متن کاملComparison of viral shedding following vaccination with inactivated and live Newcastle disease vaccines formulated with wild-type and recombinant viruses.
Virulent Newcastle disease virus isolates from the 1971 and 2002 U.S. outbreaks are of the same serotype but a different genotype than current vaccine strains. Prior experiments with inactivated vaccines in chickens show significantly less virus shed in birds vaccinated with a homologous vaccine (same genotype as challenge) compared to chickens vaccinated with genotypically heterologous vaccine...
متن کاملLaboratory evaluation of live and inactivated Newcastle disease vaccines: Their application in the Newcastle disease enzootic region
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...
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ژورنال
عنوان ژورنال: Zagazig Veterinary Journal
سال: 2022
ISSN: ['1110-1458', '2357-075X']
DOI: https://doi.org/10.21608/zvjz.2022.179646.1196