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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: |
30/10/2019 |
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Data da última atualização: |
30/10/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, A. P. S. P.; COSTA, E. de F.; SILVA G. S.; SOUZA, C. K.; SCHAEFER, R.; VAZ JÚNIOR, I. da S.; CORBELLINI, L. G. |
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Afiliação: |
ANA PAULA SERAFINI POETA, UFRGS; EDUARDO DE FREITAS COSTA, UFRGS; GUSTAVO S. SILVA, UFRGS; CARCARINE KUNZLER DE SOUZA, UFRGS; REJANE SCHAEFER, CNPSA; ITABAJARA DA SILVA VAZ JUNIOR, UFRGS; LUIS GUSTAVO CORBELLINI, UFRGS. |
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Título: |
Biosecurity practices associated with influenza A virus seroprevalence in sows from southern Brazilian breeding herds. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Preventive Veterinary Medicine, v. 166, p. 1-7, 2019. |
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DOI: |
10.1016/j.prevetmed.2019.02.013 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Influenza A virus (IAV) infection is a recognized cause of acute respiratory disease in pigs that can culminate in the decline of performance due to increasing feed conversion and costs of antimicrobial drugs to control secondary infections. Biosecurity practices are the key to prevent transmission of highly contagious agents. The aim of this study was to assess the effect of biosecurity practices on IAV seroprevalence through a cross-sectional study carried out in 404 sows from 21 herds. An indirect ELISA was used to detect antibodies against a nucleoprotein of IAV. To evaluate IAV subtypes (H1N1pdm09, H1N2 and H3N2), all samples positive by ELISA were tested using the hemagglutination inhibition assay (HI). Prevalence ratios (PR) estimates were calculated using multivariate Poisson regression accounted with survey weights. Sixty-four percent (261/404) of sows were positive in the rNP-ELISA and the estimated prevalence was 63.9% (95% CI 55%?73%). All farms had at least one seropositive sow; the frequency of IAV subtypes found in seropositive sows was 51.9% for H1N1pdm09, 38.1% for codetection H1N1pdm09 and H1N2, 8.6% for H1N2, and 0.6% for codetection H1N1pdm09 and H3N2, and 19 herds presented coinfection of H1N1 pdm09 and H1N2. Variables significantly associated with IAV seroprevalence found in the final model were ?bird-proof net? (PR = 0.75; 95% CI: 0.65?0.86) and ?gilt acclimatization unit? (PR = 0.57, 95% CI: 0.50?0.66), showing a protective effect against IAV seroprevalence, and ?external replacement?, which had a positive effect on IAV seroprevalence (PR = 1.38, 95% CI: 1.17?1.64). This study suggests that preventing contact among wild species and swine and using an adaptation area for animals before entry into the herd can be strategies to control the influenza virus in breeding herds. MenosAbstract: Influenza A virus (IAV) infection is a recognized cause of acute respiratory disease in pigs that can culminate in the decline of performance due to increasing feed conversion and costs of antimicrobial drugs to control secondary infections. Biosecurity practices are the key to prevent transmission of highly contagious agents. The aim of this study was to assess the effect of biosecurity practices on IAV seroprevalence through a cross-sectional study carried out in 404 sows from 21 herds. An indirect ELISA was used to detect antibodies against a nucleoprotein of IAV. To evaluate IAV subtypes (H1N1pdm09, H1N2 and H3N2), all samples positive by ELISA were tested using the hemagglutination inhibition assay (HI). Prevalence ratios (PR) estimates were calculated using multivariate Poisson regression accounted with survey weights. Sixty-four percent (261/404) of sows were positive in the rNP-ELISA and the estimated prevalence was 63.9% (95% CI 55%?73%). All farms had at least one seropositive sow; the frequency of IAV subtypes found in seropositive sows was 51.9% for H1N1pdm09, 38.1% for codetection H1N1pdm09 and H1N2, 8.6% for H1N2, and 0.6% for codetection H1N1pdm09 and H3N2, and 19 herds presented coinfection of H1N1 pdm09 and H1N2. Variables significantly associated with IAV seroprevalence found in the final model were ?bird-proof net? (PR = 0.75; 95% CI: 0.65?0.86) and ?gilt acclimatization unit? (PR = 0.57, 95% CI: 0.50?0.66), showing a protective effect against IA... Mostrar Tudo |
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Thesagro: |
Virologia. |
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Categoria do assunto: |
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Marc: |
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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| Registros recuperados : 9 | |
| 3. |  | WINK, C.; SANTANA, D. L. de Q.; FARIA, F. D.; ANDRADE, F. M. de; DEDECEK, R. A. Avaliação da mesofauna do solo como determinante no potencial de uso de resíduos de Pinus taeda em plantações florestais. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 4., 2005, Colombo. Anais. Colombo: Embrapa Florestas, 2005. 1 CD-ROM (Embrapa Florestas. Documentos, 117). EVINCI. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 5. | | SANTANA, D. L. Q.; ANDRADE, F. M. de; PENTEADO, S. R. C.; IEDE, E. T.; BURCKHARDT, D.; FARDIN, A. E. Two introduced psyllid species (Hemiptera, Psylloidea) in Brazilian eucalypt plantations. In: INTERNATIONAL CONGRESS AND EXHIBITION ON FOREST, 5., 1999, Curitiba. Forest 99: [resumos]. Rio de Janeiro: BIOSFERA, 1999. 1 CD-ROM. Autoria bilíngue: CONGRESSO E EXPOSICAO INTERNACIONAL SOBRE FLORESTAS, 5., 1999, Curitiba.| Biblioteca(s): Embrapa Florestas. |
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| 6. | | WINK, C.; SANTANA, D. L. de Q.; THOMAZ, D. T.; ANDRADE, F. M. de; SILVA, H. D. da; ANDRADE, G. de C. Diferentes tipos de resíduos de Pinus taeda e grau de decomposição afetando algumas comunidades biológicas em solos florestais. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 21., 2006, Recife. Entomologia: da academia à transferência de tecnologia: resumos. Recife: Sociedade Entomológica do Brasil, 2006. CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 7. | | BURCKHARDT, D.; SANTANA, D. L. de Q.; TERRA, A. L.; ANDRADE, F. M. de; PENTEADO, S. R. C.; IEDE, E. T.; MOREY, C. S. Psyllid pests (Hemiptera, Psylloidea) in South American eucalypt plantations. Bulletin de la Societe Entomologique Suisse, v.72, p.1-10, 1999.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Embrapa Florestas. |
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| 8. | | SANTANA, D. L. de Q.; BELLOTE, A. F. J.; ANDRADE, G. de C.; ANDRADE, F. M. de; SILVA, H. D. da. Effect of sawmill residue application on forest soil biological quality. In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 9. | | MASCHIO, L. M. de A.; ANDRADE, F. M. de; LEITE, M. S. P.; BELLOTE, A. F. J.; FERREIRA, C. A.; IEDE, E. T.; NARDELLI, A. M. B.; AUER, C. G.; GRIGOLETTI JUNIOR, A.; WIECHETEK, M. Seca dos ponteiros do eucalipto em Arapoti-PR. In: IUFRO CONFERENCE ON SILVICULTURE AND IMPROVEMENT EUCALYPTS=CONFERÊNCIA IUFRO SOBRE SILVICULTURA E MELHORAMENTO DE EUCALIPTOS, 1997, Salvador. Proceedings...=Anais... Colombo: EMBRAPA-CNPF, 1997. v. 3, p. 353-359.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 9 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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