A survey for maintenance of virulent newcastle disease virus-free area in poultry production in Brazil
Braz. j. microbiol
;
41(2): 368-375, Apr.-June 2010. tab, ilus
Artículo
en Inglés
| LILACS
| ID: lil-545344
ABSTRACT
In 2003, Brazil was recognized as a pathogenic Newcastle Disease Virus (NDV) strain-free country for commercial poultry. This research was conducted in Brazil between December 2003 and March 2005 to verify the maintenance of this virulent NDV-free status. Serum samples from 5,455 flocks for commercial poultry farms were collected, comprising 81,825 broiler chickens. The farms were located in nine states of the country, grouped in three geographic regions. Serological evidence of NDV infection was detected in 28.8 percent of the surveyed farms. However, all fifteen viruses isolated and identified as Newcastle Disease Virus (NDV) were characterized as nonpathogenic strains, based on the Intracerebral Pathogenicity Index. These results showed that Brazil preserves the virulent NDV-free status for commercial flocks.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Reacciones Biológicas
/
Avulavirus
/
Enfermedad de Newcastle
Tipo de estudio:
Estudio pronóstico
Límite:
Animales
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Braz. j. microbiol
Asunto de la revista:
Microbiologia
Año:
2010
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Centro Brasileiro de Pesquisa Animal/BR
/
Centro Universitário Feevale/BR
/
Ministério da Agricultura, Pecuária e Abastecimento/BR
/
Universidade Estadual Paulista/BR
/
Universidade Estadual de Campinas/BR
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