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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: |
24/09/2018 |
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Data da última atualização: |
24/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA FILHO, J. X. de; MORES, M. A. Z.; REBELATTO, R.; KICH, J. D.; CANTAO, M. E.; KLEIN, C. S.; GUEDES, R. M. C.; COLDEBELLA, A.; BARCELLOS, D. E. S. N. de; MORES, N. |
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Afiliação: |
JOÃO XAVIER DE OLIVEIRA FILHO; MARCOS ANTONIO ZANELLA MORES, CNPSA; RAQUEL REBELATTO, CNPSA; JALUSA DEON KICH, CNPSA; MAURICIO EGIDIO CANTAO, CNPSA; CATIA SILENE KLEIN, CNPSA; ROBERTO MAURÍCIO CARVALHO GUEDES; ARLEI COLDEBELLA, CNPSA; DAVID EMÍLIO SANTOS NEVES de BARCELLOS; NELSON MORES, CNPSA. |
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Título: |
Pathogenic variability among Pasteurella multocida type A isolates from Brazilian pig farms. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
BMC Veterinary Research, v. 14, n. 244, 2018. |
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DOI: |
10.1186/s12917-018-1565-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Background: Pasteurella multocida type A (PmA) is considered a secondary agent of pneumonia in pigs. The role of PmA as a primary pathogen was investigated by challenging pigs with eight field strains isolated from pneumonia and serositis in six Brazilian states. Eight groups of eight pigs each were intranasally inoculated with different strains of PmA (1.5 mL/nostril of 10e7 CFU/mL). The control group (n = 12) received sterile PBS. The pigs were euthanized by electrocution and necropsied by 5 dpi. Macroscopic lesions were recorded, and swabs and fragments of thoracic and abdominal organs were analyzed by bacteriological and pathological assays. The PmA strains were analyzed for four virulence genes (toxA: toxin; pfhA: adhesion; tbpA and hgbB: iron acquisition) by PCR and sequencing and submitted to multilocus sequence typing (MLST). Results: The eight PmA strains were classified as follows: five as highly pathogenic (HP) for causing necrotic bronchopneumonia and diffuse fibrinous pleuritis and pericarditis; one as low pathogenic for causing only focal bronchopneumonia; and two as nonpathogenic because they did not cause injury to any pig. PCR for the gene pfhA was positive for all five HP isolates. Sequencing demonstrated that the pfhA region of the HP strains comprised four genes: tpsB1, pfhA1, tpsB2 and pfhA2. The low and nonpathogenic strains did not contain the genes tpsB2 and pfhA2. A deletion of four bases was observed in the pfhA gene in the low pathogenic strain, and an insertion of 37 kb of phage DNA was observed in the nonpathogenic strains. MLST clustered the HP isolates in one group and the low and nonpathogenic isolates in another. Only the nonpathogenic isolates matched sequence type 10; the other isolates did not match any type available in the MLST database. Conclusions: The hypothesis that some PmA strains are primary pathogens and cause disease in pigs without any co-factor was confirmed. The pfhA region, comprising the genes tpsB1, tpsB2, pfhA1 and pfhA2, is related to the pathogenicity of PmA. The HP strains can cause necrotic bronchopneumonia, fibrinous pleuritis and pericarditis in pigs and can be identified by PCR amplification of the gene pfhA2. MenosAbstract: Background: Pasteurella multocida type A (PmA) is considered a secondary agent of pneumonia in pigs. The role of PmA as a primary pathogen was investigated by challenging pigs with eight field strains isolated from pneumonia and serositis in six Brazilian states. Eight groups of eight pigs each were intranasally inoculated with different strains of PmA (1.5 mL/nostril of 10e7 CFU/mL). The control group (n = 12) received sterile PBS. The pigs were euthanized by electrocution and necropsied by 5 dpi. Macroscopic lesions were recorded, and swabs and fragments of thoracic and abdominal organs were analyzed by bacteriological and pathological assays. The PmA strains were analyzed for four virulence genes (toxA: toxin; pfhA: adhesion; tbpA and hgbB: iron acquisition) by PCR and sequencing and submitted to multilocus sequence typing (MLST). Results: The eight PmA strains were classified as follows: five as highly pathogenic (HP) for causing necrotic bronchopneumonia and diffuse fibrinous pleuritis and pericarditis; one as low pathogenic for causing only focal bronchopneumonia; and two as nonpathogenic because they did not cause injury to any pig. PCR for the gene pfhA was positive for all five HP isolates. Sequencing demonstrated that the pfhA region of the HP strains comprised four genes: tpsB1, pfhA1, tpsB2 and pfhA2. The low and nonpathogenic strains did not contain the genes tpsB2 and pfhA2. A deletion of four bases was observed in the pfhA gene in the low pathogenic ... Mostrar Tudo |
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Palavras-Chave: |
Broncopneumonia; PCR; PfhA; Poliserositis; Polyserositis. |
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Thesagro: |
Doença Respiratória; Suíno. |
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Thesaurus Nal: |
Bronchopneumonia; Multilocus sequence typing; Pathogenicity; Polymerase chain reaction; Respiratory tract diseases; Swine; Virulent strains. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03381naa a2200409 a 4500
001 2096196
005 2018-09-24
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1186/s12917-018-1565-2$2DOI
100 1 $aOLIVEIRA FILHO, J. X. de
245 $aPathogenic variability among Pasteurella multocida type A isolates from Brazilian pig farms.$h[electronic resource]
260 $c2018
520 $aAbstract: Background: Pasteurella multocida type A (PmA) is considered a secondary agent of pneumonia in pigs. The role of PmA as a primary pathogen was investigated by challenging pigs with eight field strains isolated from pneumonia and serositis in six Brazilian states. Eight groups of eight pigs each were intranasally inoculated with different strains of PmA (1.5 mL/nostril of 10e7 CFU/mL). The control group (n = 12) received sterile PBS. The pigs were euthanized by electrocution and necropsied by 5 dpi. Macroscopic lesions were recorded, and swabs and fragments of thoracic and abdominal organs were analyzed by bacteriological and pathological assays. The PmA strains were analyzed for four virulence genes (toxA: toxin; pfhA: adhesion; tbpA and hgbB: iron acquisition) by PCR and sequencing and submitted to multilocus sequence typing (MLST). Results: The eight PmA strains were classified as follows: five as highly pathogenic (HP) for causing necrotic bronchopneumonia and diffuse fibrinous pleuritis and pericarditis; one as low pathogenic for causing only focal bronchopneumonia; and two as nonpathogenic because they did not cause injury to any pig. PCR for the gene pfhA was positive for all five HP isolates. Sequencing demonstrated that the pfhA region of the HP strains comprised four genes: tpsB1, pfhA1, tpsB2 and pfhA2. The low and nonpathogenic strains did not contain the genes tpsB2 and pfhA2. A deletion of four bases was observed in the pfhA gene in the low pathogenic strain, and an insertion of 37 kb of phage DNA was observed in the nonpathogenic strains. MLST clustered the HP isolates in one group and the low and nonpathogenic isolates in another. Only the nonpathogenic isolates matched sequence type 10; the other isolates did not match any type available in the MLST database. Conclusions: The hypothesis that some PmA strains are primary pathogens and cause disease in pigs without any co-factor was confirmed. The pfhA region, comprising the genes tpsB1, tpsB2, pfhA1 and pfhA2, is related to the pathogenicity of PmA. The HP strains can cause necrotic bronchopneumonia, fibrinous pleuritis and pericarditis in pigs and can be identified by PCR amplification of the gene pfhA2.
650 $aBronchopneumonia
650 $aMultilocus sequence typing
650 $aPathogenicity
650 $aPolymerase chain reaction
650 $aRespiratory tract diseases
650 $aSwine
650 $aVirulent strains
650 $aDoença Respiratória
650 $aSuíno
653 $aBroncopneumonia
653 $aPCR
653 $aPfhA
653 $aPoliserositis
653 $aPolyserositis
700 1 $aMORES, M. A. Z.
700 1 $aREBELATTO, R.
700 1 $aKICH, J. D.
700 1 $aCANTAO, M. E.
700 1 $aKLEIN, C. S.
700 1 $aGUEDES, R. M. C.
700 1 $aCOLDEBELLA, A.
700 1 $aBARCELLOS, D. E. S. N. de
700 1 $aMORES, N.
773 $tBMC Veterinary Research$gv. 14, n. 244, 2018.
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
31/01/2002 |
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Data da última atualização: |
31/10/2018 |
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Autoria: |
SILVA, R. G. da; PRADO, I. N. do; MATSUSHITA, M.; SOUZA, N. E. de. |
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Afiliação: |
Regiane Gregório da Silva, Capes fellow; Ivanor Nunes do Prado, Universidde Estadual de Maringá - UEM/Departamento de Zootecnia; Makoto Matsushita, Universidade Estadual de Maringá - UEM/ Departamento de Química; Nilson Evelázio de Souza, Universidade Estadual de Maringá - UEM/ Departamento de Química. |
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Título: |
Dietary effects on muscle fatty acid composition of finished heifers. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 37, n. 1, p. 95-101, jan. 2002 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Efeitos de dietas sobre a composição em ácidos graxos de novilhas terminadas em confinamento. |
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Conteúdo: |
The effects of diet on Longissimus muscle fatty acid composition was determined using 24 crossbred heifers of Simmental vs. Nelore and Limousin vs. Nelore. The experimental diets were: 1) corn and yeast (CY); 2) corn, cottonseed meal + meat and bones meal (CMB); 3) cassava hull and yeast (CHY); 4) cassava hull, cottonseed meal + meat and bones meal (CHMB). Feeding CHMB diets resulted in lower lipid and higher cholesterol contents (P<0.05) for both crosses. Most of the identified fatty acids were monounsaturated, and the highest percentage was found to oleic acid (C18:1w9), with values ranging from 32.54 to 46.42%. Among the saturated fatty acids the palmitic acid (C16:0) showed the highest percentage, with its contents ranging between 19.40 and 32.44%. The highest polyunsaturated/saturated fatty acid ratio was of 0.30, and the lowest was of 0.08. Feeding CY diets resulted in lower cholesterol and higher polyunsaturated fatty acid contents of the Longissimus muscle. |
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Palavras-Chave: |
ácidos graxos insaturados; ácidos graxos saturados; Músculos; rations. |
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Thesagro: |
Ração. |
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Thesaurus NAL: |
muscles; saturated fatty acids; unsaturated fatty acids. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/21228/1/pab20_246.pdf
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Marc: |
LEADER 01850naa a2200265 a 4500
001 1106118
005 2018-10-31
008 2002 bl uuuu u00u1 u #d
100 1 $aSILVA, R. G. da
245 $aDietary effects on muscle fatty acid composition of finished heifers.
260 $c2002
500 $aTítulo em português: Efeitos de dietas sobre a composição em ácidos graxos de novilhas terminadas em confinamento.
520 $aThe effects of diet on Longissimus muscle fatty acid composition was determined using 24 crossbred heifers of Simmental vs. Nelore and Limousin vs. Nelore. The experimental diets were: 1) corn and yeast (CY); 2) corn, cottonseed meal + meat and bones meal (CMB); 3) cassava hull and yeast (CHY); 4) cassava hull, cottonseed meal + meat and bones meal (CHMB). Feeding CHMB diets resulted in lower lipid and higher cholesterol contents (P<0.05) for both crosses. Most of the identified fatty acids were monounsaturated, and the highest percentage was found to oleic acid (C18:1w9), with values ranging from 32.54 to 46.42%. Among the saturated fatty acids the palmitic acid (C16:0) showed the highest percentage, with its contents ranging between 19.40 and 32.44%. The highest polyunsaturated/saturated fatty acid ratio was of 0.30, and the lowest was of 0.08. Feeding CY diets resulted in lower cholesterol and higher polyunsaturated fatty acid contents of the Longissimus muscle.
650 $amuscles
650 $asaturated fatty acids
650 $aunsaturated fatty acids
650 $aRação
653 $aácidos graxos insaturados
653 $aácidos graxos saturados
653 $aMúsculos
653 $arations
700 1 $aPRADO, I. N. do
700 1 $aMATSUSHITA, M.
700 1 $aSOUZA, N. E. de
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 37, n. 1, p. 95-101, jan. 2002
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