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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
18/11/2014 |
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Data da última atualização: |
20/05/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARKS, F. S.; RODENBUSCH, C. R.; OKINO, C. H.; HEIN, H. E.; COSTA, E. de F.; MACHADO, G.; CANAL, C. W.; BRENTANO, L.; CORBELLINI, L. G. |
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Afiliação: |
FERNANDA SIMONE MARKS, UFGRS; CARLA ROSANE RODENBUSCH, UFGRS; CINTIA HIROMI OKINO, CNPSA; HÉBER EDUARDO HEIN, UFGRS; EDUARDO DE FREITAS COSTA, UFGRS; GUSTAVO MACHADO, UFGRS; CLAUDIO WAGECK CANAL, UFGRS; LIANA BRENTANO, CNPSA; LUÍS GUSTAVO CORBELLINI, UFGRS. |
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Título: |
Targeted survey of newcastle disease virus in backyard poultry flocks located in wintering site for migratory birds from southern Brazil. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Preventive Veterinary Medicine, St. Louis, v. 116, p.197-202, 2014. |
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DOI: |
10.1016/j.prevetmed.2014.06.001 |
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Idioma: |
Inglês |
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Conteúdo: |
Newcastle disease virus (NDV) causes a fast-spreading, highly contagious infectious disease in several bird species. Commercial poultry farms in Brazil were considered free of virulent NDV. Data on NDV infection levels in backyard poultry flocks and the epidemiology of the disease are limited. The aim of this study was to perform a NDV survey in backyard poultry from households flocks located around one of the main wintering sites for migratory wild birds in Brazil, and to identify potential risk factors associated with NDV. Backyard poultry may be sentinels and a source of infection for commercial poultry, since they may have as much contact with these birds as with migratory wild birds. Data were collected from 48 randomly selected households using an epidemiological questionnaire. Serum samples from poultry were tested for NDV antibodies using an ELISA, and tracheal and cloacal swabs were collected for NDV molecular detection. The risk factors were assessed using a multivariate Poisson regression with robust variance. The ELISA showed that 33.8% of the serum samples were positive for anti-NDV antibodies and in 42 households (87.5%) at least one NDV-positive bird was found. Tracheal and cloacal swabs were negative for NDV by real time RT-PCR, possible because within this region there might flow a low pathogenicity NDV strain, which can induce seroconversion with innaparent clinical findings. The prevalence ratio (PR) increased when farmers used their own replacement poultry to restock their flock (PR = 1.64; 95% CI: 1.11–2.42). Furthermore, the increasing distance of the household flock from the “Laguna do Peixe” estuary was associated with decreasing NDV seropositivity (PR = 0.94; 95% CI: 0.90–0.99). This is the first study in Brazil evaluating the presence of NDV and the associated risk factors in households with backyard poultry flocks. The great number of farms with seropositive birds indicates that the virus circulates in backyard flocks, and this breeding system may be a source of NDV. These data can be used to establish appropriate biosecurity and husbandry measures for this type of breeding system to prevent NDV spread in Brazil. MenosNewcastle disease virus (NDV) causes a fast-spreading, highly contagious infectious disease in several bird species. Commercial poultry farms in Brazil were considered free of virulent NDV. Data on NDV infection levels in backyard poultry flocks and the epidemiology of the disease are limited. The aim of this study was to perform a NDV survey in backyard poultry from households flocks located around one of the main wintering sites for migratory wild birds in Brazil, and to identify potential risk factors associated with NDV. Backyard poultry may be sentinels and a source of infection for commercial poultry, since they may have as much contact with these birds as with migratory wild birds. Data were collected from 48 randomly selected households using an epidemiological questionnaire. Serum samples from poultry were tested for NDV antibodies using an ELISA, and tracheal and cloacal swabs were collected for NDV molecular detection. The risk factors were assessed using a multivariate Poisson regression with robust variance. The ELISA showed that 33.8% of the serum samples were positive for anti-NDV antibodies and in 42 households (87.5%) at least one NDV-positive bird was found. Tracheal and cloacal swabs were negative for NDV by real time RT-PCR, possible because within this region there might flow a low pathogenicity NDV strain, which can induce seroconversion with innaparent clinical findings. The prevalence ratio (PR) increased when farmers used their own replacement poultr... Mostrar Tudo |
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Palavras-Chave: |
Vírus da doença newcastle. |
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Thesagro: |
Ave doméstica; Transmissão de doença; Virologia. |
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Thesaurus Nal: |
Disease transmission; Newcastle disease virus; Poultry. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03173naa a2200313 a 4500
001 2000444
005 2016-05-20
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1016/j.prevetmed.2014.06.001$2DOI
100 1 $aMARKS, F. S.
245 $aTargeted survey of newcastle disease virus in backyard poultry flocks located in wintering site for migratory birds from southern Brazil.$h[electronic resource]
260 $c2014
520 $aNewcastle disease virus (NDV) causes a fast-spreading, highly contagious infectious disease in several bird species. Commercial poultry farms in Brazil were considered free of virulent NDV. Data on NDV infection levels in backyard poultry flocks and the epidemiology of the disease are limited. The aim of this study was to perform a NDV survey in backyard poultry from households flocks located around one of the main wintering sites for migratory wild birds in Brazil, and to identify potential risk factors associated with NDV. Backyard poultry may be sentinels and a source of infection for commercial poultry, since they may have as much contact with these birds as with migratory wild birds. Data were collected from 48 randomly selected households using an epidemiological questionnaire. Serum samples from poultry were tested for NDV antibodies using an ELISA, and tracheal and cloacal swabs were collected for NDV molecular detection. The risk factors were assessed using a multivariate Poisson regression with robust variance. The ELISA showed that 33.8% of the serum samples were positive for anti-NDV antibodies and in 42 households (87.5%) at least one NDV-positive bird was found. Tracheal and cloacal swabs were negative for NDV by real time RT-PCR, possible because within this region there might flow a low pathogenicity NDV strain, which can induce seroconversion with innaparent clinical findings. The prevalence ratio (PR) increased when farmers used their own replacement poultry to restock their flock (PR = 1.64; 95% CI: 1.11–2.42). Furthermore, the increasing distance of the household flock from the “Laguna do Peixe” estuary was associated with decreasing NDV seropositivity (PR = 0.94; 95% CI: 0.90–0.99). This is the first study in Brazil evaluating the presence of NDV and the associated risk factors in households with backyard poultry flocks. The great number of farms with seropositive birds indicates that the virus circulates in backyard flocks, and this breeding system may be a source of NDV. These data can be used to establish appropriate biosecurity and husbandry measures for this type of breeding system to prevent NDV spread in Brazil.
650 $aDisease transmission
650 $aNewcastle disease virus
650 $aPoultry
650 $aAve doméstica
650 $aTransmissão de doença
650 $aVirologia
653 $aVírus da doença newcastle
700 1 $aRODENBUSCH, C. R.
700 1 $aOKINO, C. H.
700 1 $aHEIN, H. E.
700 1 $aCOSTA, E. de F.
700 1 $aMACHADO, G.
700 1 $aCANAL, C. W.
700 1 $aBRENTANO, L.
700 1 $aCORBELLINI, L. G.
773 $tPreventive Veterinary Medicine, St. Louis$gv. 116, p.197-202, 2014.
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
12/12/2022 |
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Data da última atualização: |
13/12/2022 |
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Tipo da produção científica: |
Circular Técnica |
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Autoria: |
SCIVITTARO, W. B.; MATTOS, M. L. T.; LUCAS, N. F.; MARTINS, J. F. da S.; VASCONCELLOS, E. E. |
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Afiliação: |
WALKYRIA BUENO SCIVITTARO, CPACT; MARIA LAURA TURINO MATTOS, CPACT; NATHÁLIA FURTADO LUCAS, UNIVERSIDADE FEDERAL DE PELOTAS; JOSE FRANCISCO DA SILVA MARTINS, CPACT; EDUARDA EHLERT VASCONCELLOS, UNIVERSIDADE FEDERAL DE PELOTAS. |
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Título: |
Tecnologia de fixação biológica de nitrogênio na cultura de arroz irrigado: indicações de manejo e impacto ambiental. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Pelotas: Embrapa Clima Temperado, 2022. |
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Série: |
(Embrapa Clima Temperado. Circular Técnica, 227). |
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ISSN: |
1516-8832 |
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Idioma: |
Português |
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Notas: |
ODS 2. |
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Conteúdo: |
Esta publicação reúne o relato de um conjunto de estudos e ações desenvolvidas no âmbito do projeto ?Fixação biológica de nitrogênio em arroz irrigado como base a uma agricultura de baixo carbono?, cadastrado no Sistema Embrapa de Gestão ? SEG sob o código 22.16.04.026.00.00, com o objetivo de subsidiar o estabelecimento de recomendações de práticas de manejo fitotécnico e fitossanitário visando otimizar a eficiência agronômica de inoculantes de bactérias diazotróficas e o desempenho produtivo da cultura de arroz irrigado. Adicionalmente, apresenta informações relativas ao impacto ambiental da tecnologia FBN em arroz irrigado, com foco no potencial de emissão de GEE e qualidade da água de lavouras de arroz que adotam a tecnologia FBN. ODS 2: Fome zero e agricultura sustentável. |
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Palavras-Chave: |
Manejo fitossanitário; Selo ODS 2. |
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Thesagro: |
Fitotecnia; Fixação de Nitrogênio; Manejo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149484/1/CPACT-Circular-227.pdf
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Marc: |
LEADER 01613nam a2200253 a 4500
001 2149484
005 2022-12-13
008 2022 bl uuuu u0uu1 u #d
022 $a1516-8832
100 1 $aSCIVITTARO, W. B.
245 $aTecnologia de fixação biológica de nitrogênio na cultura de arroz irrigado$bindicações de manejo e impacto ambiental.$h[electronic resource]
260 $aPelotas: Embrapa Clima Temperado$c2022
490 $a(Embrapa Clima Temperado. Circular Técnica, 227).
500 $aODS 2.
520 $aEsta publicação reúne o relato de um conjunto de estudos e ações desenvolvidas no âmbito do projeto ?Fixação biológica de nitrogênio em arroz irrigado como base a uma agricultura de baixo carbono?, cadastrado no Sistema Embrapa de Gestão ? SEG sob o código 22.16.04.026.00.00, com o objetivo de subsidiar o estabelecimento de recomendações de práticas de manejo fitotécnico e fitossanitário visando otimizar a eficiência agronômica de inoculantes de bactérias diazotróficas e o desempenho produtivo da cultura de arroz irrigado. Adicionalmente, apresenta informações relativas ao impacto ambiental da tecnologia FBN em arroz irrigado, com foco no potencial de emissão de GEE e qualidade da água de lavouras de arroz que adotam a tecnologia FBN. ODS 2: Fome zero e agricultura sustentável.
650 $aFitotecnia
650 $aFixação de Nitrogênio
650 $aManejo
653 $aManejo fitossanitário
653 $aSelo ODS 2
700 1 $aMATTOS, M. L. T.
700 1 $aLUCAS, N. F.
700 1 $aMARTINS, J. F. da S.
700 1 $aVASCONCELLOS, E. E.
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Embrapa Clima Temperado (CPACT) |
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