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	Provedor de dados Rev. Bras. Ciênc. Avic. (4) Autor Paiva,JB (4) Berchieri Junior,A (3) Penha Filho,RAC (2) Sterzo,EV (2) Almeida,MA (1) Berchieri Jr,A (1) Cavallini,JS (1) Freitas Neto,OC (1) Mesquita,AL (1) Moura,BS (1) Silva,MD (1) Ângela,HL (1) Mais... Palavra-chave Competitive exclusion (2) Salmonella Enteritidis (2) Attenuation (1) Chicken (1) Differentiation (1) Effectiveness (1) FliC gene (1) Immune response (1) Organic acids (1) Probiotic (1) Reversion to virulence (1) Salmonella Gallinarum (1) Salmonella Pullorum (1) Salmonella vaccine (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2012 (1) 2009 (1) 2007 (1) 2005 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Organic acids and/or compound with defined microorganisms to control Salmonella enterica serovar Enteritidis experimental infection in chickens Rev. Bras. Ciênc. Avic. Sterzo,EV; Paiva,JB; Mesquita,AL; Freitas Neto,OC; Berchieri Jr,A. The association of human foodborne salmonellosis with poultry products enhanced the efforts to control Salmonella Enteritidis in poultry farms. Dietary organic acid supplementation is one of the measures currently used to reduce the presence of undesirable microorganisms. Another method to control enteric Salmonella in poultry is competitive exclusion using defined or undefined microorganisms products. Organic acids and microbiological methods to accelerate the development of the intestinal microbiota can be used individually or in combination. The present study evaluated the effect of dietary supplementation of an acidifier and of a defined multi-strain microbial mixture (Biomin® PoultryStar) via drinking water in the control of the intestinal... Tipo: Info:eu-repo/semantics/article Palavras-chave: Competitive exclusion; Organic acids; Probiotic; Salmonella Enteritidis. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100010 Time required to protect the intestinal tract of chicks against Salmonella enterica serovar enteritidis using competitive exclusion Rev. Bras. Ciênc. Avic. Sterzo,EV; Paiva,JB; Penha Filho,RAC; Berchieri Junior,A. Competitive exclusion (CE) has been designed to accelerate the colonization of the alimentary tract of young commercial birds and it has been also used to repopulate the digestive tract after antibiotic therapy. The method has been successfully adopted as a means to prevent enteric salmonellosis. The present study was carried out to evaluate if CE is able to prevent this kind of infection. Newly hatched chicks were given a CE culture and at different intervals of time birds infected with Salmonella Enteritidis were placed together with the group of treated birds. CE culture was prepared from feces of adult laying hens incubated overnight at 37C under aerobic conditions. Birds were killed 4 and 8 days after challenge and viable counts of Salmonella... Tipo: Info:eu-repo/semantics/article Palavras-chave: Competitive exclusion; Effectiveness; Salmonella Enteritidis. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200009 Molecular differentiation of Salmonella Gallinarum and Salmonella Pullorum by RFLP of fliC gene from Brazilian isolates Rev. Bras. Ciênc. Avic. Paiva,JB; Cavallini,JS; Silva,MD; Almeida,MA; Ângela,HL; Berchieri Junior,A. Although Salmonella Pullorum and Salmonella Gallinarum cause different diseases in poultry, they are very similar. Both are non-motile and present the same somatic antigenic structure. They are differentiated by biochemical tests. Certain atypical strains are very difficult to distinguish. They do not produce the expected results when dulcitol and ornithine descarxboxylase tests are performed. Therefore, additional tests could be helpful. Many studies have chose the part I of the gene that encodes flagellin (fliC) to differentiate serotypes. Most Salmonella strains have two structural genes (fliC and fliB) that encode flagellins. Non-motile strains generally present these structural genes, but are not able to build a functional flagellum. It was... Tipo: Info:eu-repo/semantics/article Palavras-chave: FliC gene; Differentiation; Salmonella Gallinarum; Salmonella Pullorum. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400009 Safety and efficacy of a salmonella gallinarum ΔcobSΔcbiA strain with potential to prevent chicken infections by salmonella gallinarum and salmonella enteritidis Rev. Bras. Ciênc. Avic. Paiva,JB; Penha Filho,RAC; Moura,BS; Berchieri Junior,A. New vaccine design techniques have allowed the development of effective vaccine strains against Salmonella infections inwhich the risks of reversion to the wild type and virulence is null. The mutant strain Salmonella Gallinarum ΔcobSΔcbiA was previously shown to be avirulent in chickens. In this study, this strain was tested as a vaccine against Salmonella Gallinarum (SG) and S. Enteritidis (SE) infections, and its protection levels, safety and possible risks of reversion to virulence after vaccination of layers were evaluated. Birds were vaccinated at five days of age or at five and 25 days of age. At 45 days of age, brown and white layers were challenged with SG and SE wild strains, respectively. Two assays to test the possibility of reversion to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Salmonella vaccine; Attenuation; Reversion to virulence; Chicken; Immune response. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200005 Registros recuperados: 4 Primeira ... 1 ... Última

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