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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: |
11/09/2023 |
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Data da última atualização: |
11/09/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
JUNQUEIRA, D. M.; TOCHETTO, C.; ANDERSON, T. K.; GAVA, D.; HAACH, V.; CANTAO, M. E.; BAKER, A. L. V.; SCHAEFER, R. |
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Afiliação: |
DENNIS MALETICH JUNQUEIRA, Universidade Federal de Santa Maria; CAROLINE TOCHETTO; TAVIS K. ANDERSON, Virus and Prion Research Unit/USDA; DANIELLE GAVA, CNPSA; VANESSA HAACH, Universidade Federal do Rio Grande do Sul; MAURICIO EGIDIO CANTAO, CNPSA; AMY L. VINCENT BAKER, Virus and Prion Research Unit/USDA; REJANE SCHAEFER, CNPSA. |
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Título: |
Human-to-swine introductions and onward transmission of 2009 H1N1 pandemic influenza viruses in Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Frontiers in Microbiology, v. 14, article 1243567, 2023. |
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DOI: |
https://doi.org/10.3389/fmicb.2023.1243567 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Introduction: Once established in the human population, the 2009 H1N1 pandemic virus (H1N1pdm09) was repeatedly introduced into swine populations globally with subsequent onward transmission among pigs. Methods: To identify and characterize human-to-swine H1N1pdm09 introductions in Brazil, we conducted a large-scale phylogenetic analysis of 4,141 H1pdm09 hemagglutinin (HA) and 3,227 N1pdm09 neuraminidase (NA) gene sequences isolated globally from humans and swine between 2009 and 2022. Results: Phylodynamic analysis revealed that during the period between 2009 and 2011, there was a rapid transmission of the H1N1pdm09 virus from humans to swine in Brazil. Multiple introductions of the virus were observed, but most of them resulted in self-limited infections in swine, with limited onward transmission. Only a few sustained transmission clusters were identified during this period. After 2012, there was a reduction in the number of human-to-swine H1N1pdm09 transmissions in Brazil. Discussion: The virus underwent continuous antigenic drift, and a balance was established between swine-to-swine transmission and extinction, with minimal sustained onward transmission from humans to swine. These results emphasize the dynamic interplay between human-to-swine transmission, antigenic drift, and the establishment of swine-to-swine transmission in shaping the evolution and persistence of H1N1pdm09 in swine populations. |
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Palavras-Chave: |
H1N1; Spillover. |
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Thesagro: |
Contaminação; Suíno. |
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Thesaurus Nal: |
Brazil; Influenza A virus; Spreaders; Swine. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02318naa a2200313 a 4500
001 2156564
005 2023-09-11
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3389/fmicb.2023.1243567$2DOI
100 1 $aJUNQUEIRA, D. M.
245 $aHuman-to-swine introductions and onward transmission of 2009 H1N1 pandemic influenza viruses in Brazil.$h[electronic resource]
260 $c2023
520 $aAbstract: Introduction: Once established in the human population, the 2009 H1N1 pandemic virus (H1N1pdm09) was repeatedly introduced into swine populations globally with subsequent onward transmission among pigs. Methods: To identify and characterize human-to-swine H1N1pdm09 introductions in Brazil, we conducted a large-scale phylogenetic analysis of 4,141 H1pdm09 hemagglutinin (HA) and 3,227 N1pdm09 neuraminidase (NA) gene sequences isolated globally from humans and swine between 2009 and 2022. Results: Phylodynamic analysis revealed that during the period between 2009 and 2011, there was a rapid transmission of the H1N1pdm09 virus from humans to swine in Brazil. Multiple introductions of the virus were observed, but most of them resulted in self-limited infections in swine, with limited onward transmission. Only a few sustained transmission clusters were identified during this period. After 2012, there was a reduction in the number of human-to-swine H1N1pdm09 transmissions in Brazil. Discussion: The virus underwent continuous antigenic drift, and a balance was established between swine-to-swine transmission and extinction, with minimal sustained onward transmission from humans to swine. These results emphasize the dynamic interplay between human-to-swine transmission, antigenic drift, and the establishment of swine-to-swine transmission in shaping the evolution and persistence of H1N1pdm09 in swine populations.
650 $aBrazil
650 $aInfluenza A virus
650 $aSpreaders
650 $aSwine
650 $aContaminação
650 $aSuíno
653 $aH1N1
653 $aSpillover
700 1 $aTOCHETTO, C.
700 1 $aANDERSON, T. K.
700 1 $aGAVA, D.
700 1 $aHAACH, V.
700 1 $aCANTAO, M. E.
700 1 $aBAKER, A. L. V.
700 1 $aSCHAEFER, R.
773 $tFrontiers in Microbiology$gv. 14, article 1243567, 2023.
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Embrapa Suínos e Aves (CNPSA) |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
30/04/2018 |
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Data da última atualização: |
30/04/2018 |
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Autoria: |
CARVALHO, E. H.; MENDES, A. S.; TAKAHSHI, S. E.; ASSUMPÇÃO, R. A. B.; BONAMIGO, D. V.; MULLER, D.; SIKORSKI, R. R. |
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Afiliação: |
Erich H. Carvalho, Programa de Pós-Graduação em Zootecnia - PPGZO/Universidade Tecnológica Federal do Paraná - UTFPR; Angélica S. Mendes, Departamento de Agronomia/UTFPR; Sabrina E. Takahashi, Departamento de Zootecnia/UTFPR; Rosângela A. B. Assumpção, Departamento de Tecnologia Alimentar/UTFPR; Douglas V. Bonamigo, Departamento de Zootecnia/UTFPR; Daniel Müller, Departamento de Zootecnia/UTFPR; Rosana R. Sikorski, Departamento de Zootecnia/UTFPR. |
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Título: |
Defined and undefined commercial probiotics cultures in the prevention of Salmonella Enteritidis in broilers. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 38, n. 2, p. 271-276 , fevereiro 2018 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Probióticos comerciais de culturas definidas e indefinidas na prevenção de Salmonella Enteritidis em frangos de corte. |
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Conteúdo: |
This study aimed to evaluate the efficacy of probiotics from different formations, defined and undefined cultures, applied in the control of Salmonella Enteritidis in broilers, identifying the compositions and states for which the probiotics are more effective. For that, 390 broilers were inoculated orally with 1.00 ml of Salmonella Enteritidis at a concentration of 1.2x109 CFU (Colony Forming Units). The experimental design used was randomized blocks with 5 treatments and 6 replications, totaling 30 boxes with 13 birds/box (13 birds/m2). The treatments were provided via drinking water 1 hour after inoculation, keeping a daily treatment of 12 hours with probiotics, for 3 consecutive days (birds at 1, 2 and 3 days of age). In general, the five treatments conducted were: T1 - Control without probiotic, T2 - Probiotic A (defined culture - lyophilized form, strain 7), T3 - Probiotic B (defined culture - lyophilized form, strain 11), T4 - Probiotic C (undefined culture liquid form), T5 - Probiotic D (undefined culture - liquid form). After treatments, performance was evaluated through average body weight, feed conversion and mortality counting. Microbiological analysis and Salmonella isolation were performed using MPN (Most Probable Number) and selective enrichment technique methods, respectively. Samples of ileum and liver pool, cecal tonsils, cecum, heart and spleen pool were collected at 5 and 31 days of age. No differences were observed on growth performance and isolation of Salmonella Enteritidis (p≥0.05). All probiotics applied were effective on reducing Salmonella Enteritidis colonization in the ileum, cecal tonsils, and cecum at 5 days of life. Probiotics T2 and T5 has shown effectiveness in reducing colonization at 31 days, being considered the most efficient on Salmonella Enteritidis control, for the intestines segments evaluated. It was not possible to affirm which probiotics formation, defined or undefined, is more efficient for Salmonella Enteritidis control. MenosThis study aimed to evaluate the efficacy of probiotics from different formations, defined and undefined cultures, applied in the control of Salmonella Enteritidis in broilers, identifying the compositions and states for which the probiotics are more effective. For that, 390 broilers were inoculated orally with 1.00 ml of Salmonella Enteritidis at a concentration of 1.2x109 CFU (Colony Forming Units). The experimental design used was randomized blocks with 5 treatments and 6 replications, totaling 30 boxes with 13 birds/box (13 birds/m2). The treatments were provided via drinking water 1 hour after inoculation, keeping a daily treatment of 12 hours with probiotics, for 3 consecutive days (birds at 1, 2 and 3 days of age). In general, the five treatments conducted were: T1 - Control without probiotic, T2 - Probiotic A (defined culture - lyophilized form, strain 7), T3 - Probiotic B (defined culture - lyophilized form, strain 11), T4 - Probiotic C (undefined culture liquid form), T5 - Probiotic D (undefined culture - liquid form). After treatments, performance was evaluated through average body weight, feed conversion and mortality counting. Microbiological analysis and Salmonella isolation were performed using MPN (Most Probable Number) and selective enrichment technique methods, respectively. Samples of ileum and liver pool, cecal tonsils, cecum, heart and spleen pool were collected at 5 and 31 days of age. No differences were observed on growth performance and isolation of ... Mostrar Tudo |
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Palavras-Chave: |
Bird health; Frangos de corte; Probióticos comerciais. |
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Thesagro: |
Bacteriose; Segurança alimentar. |
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Thesaurus NAL: |
Bacterial infections; Broiler chickens; Probiotics; Salmonella Enteritidis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/176163/1/Defined-and-undefined-commercial-probiotics-cultures.pdf
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Marc: |
LEADER 03108naa a2200313 a 4500
001 2091059
005 2018-04-30
008 2018 bl uuuu u00u1 u #d
100 1 $aCARVALHO, E. H.
245 $aDefined and undefined commercial probiotics cultures in the prevention of Salmonella Enteritidis in broilers.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Probióticos comerciais de culturas definidas e indefinidas na prevenção de Salmonella Enteritidis em frangos de corte.
520 $aThis study aimed to evaluate the efficacy of probiotics from different formations, defined and undefined cultures, applied in the control of Salmonella Enteritidis in broilers, identifying the compositions and states for which the probiotics are more effective. For that, 390 broilers were inoculated orally with 1.00 ml of Salmonella Enteritidis at a concentration of 1.2x109 CFU (Colony Forming Units). The experimental design used was randomized blocks with 5 treatments and 6 replications, totaling 30 boxes with 13 birds/box (13 birds/m2). The treatments were provided via drinking water 1 hour after inoculation, keeping a daily treatment of 12 hours with probiotics, for 3 consecutive days (birds at 1, 2 and 3 days of age). In general, the five treatments conducted were: T1 - Control without probiotic, T2 - Probiotic A (defined culture - lyophilized form, strain 7), T3 - Probiotic B (defined culture - lyophilized form, strain 11), T4 - Probiotic C (undefined culture liquid form), T5 - Probiotic D (undefined culture - liquid form). After treatments, performance was evaluated through average body weight, feed conversion and mortality counting. Microbiological analysis and Salmonella isolation were performed using MPN (Most Probable Number) and selective enrichment technique methods, respectively. Samples of ileum and liver pool, cecal tonsils, cecum, heart and spleen pool were collected at 5 and 31 days of age. No differences were observed on growth performance and isolation of Salmonella Enteritidis (p≥0.05). All probiotics applied were effective on reducing Salmonella Enteritidis colonization in the ileum, cecal tonsils, and cecum at 5 days of life. Probiotics T2 and T5 has shown effectiveness in reducing colonization at 31 days, being considered the most efficient on Salmonella Enteritidis control, for the intestines segments evaluated. It was not possible to affirm which probiotics formation, defined or undefined, is more efficient for Salmonella Enteritidis control.
650 $aBacterial infections
650 $aBroiler chickens
650 $aProbiotics
650 $aSalmonella Enteritidis
650 $aBacteriose
650 $aSegurança alimentar
653 $aBird health
653 $aFrangos de corte
653 $aProbióticos comerciais
700 1 $aMENDES, A. S.
700 1 $aTAKAHSHI, S. E.
700 1 $aASSUMPÇÃO, R. A. B.
700 1 $aBONAMIGO, D. V.
700 1 $aMULLER, D.
700 1 $aSIKORSKI, R. R.
773 $tPesquisa Veterinária Brasileira, Rio de Janeiro$gv. 38, n. 2, p. 271-276 , fevereiro 2018
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