SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Paiva,Jacqueline Boldrin de; Penha Filho,Rafael Antonio Casarin; Arguello,Yuli Melisa Sierra; Berchieri Junior,Ângelo; Lemos,Manuel Victor Franco; Barrow,Paul A..

Salmonella enterica serovar Gallinarum (SG) is a fowl typhoid agent in chickens and is a severe disease with worldwide economic impact as its mortality may reach up to 80%. It is one of a small group of serovars that typically produces typhoid-like infections in a narrow range of host species and which therefore represents a good model for human typhoid. The survival mechanisms are not considered to be virulent mechanisms but are essential for the life of the bacterium. Mutants of Salmonella Gallinarum containing defective genes, related to cobalamin biosynthesis and which Salmonella spp. has to be produced to survive when it is in an anaerobic environment, were produced in this study. Salmonella Gallinarum is an intracellular parasite. Therefore, this...

Efficacy of several Salmonella vaccination programs against experimental challenge with Salmonella gallinarum in commercial brown layer and broiler breeder hens

Palavras-chave: Salmonella Gallinarum; Cobalamin biosynthesis; Attenuated strain; CbiA and cobS genes; CbiA; CobS.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000300012

Paiva,JB de; Penha Filho,RAC; Argüello,YMS; Silva,MD da; Gardin,Y; Resende,F; Berchieri Junior,A; Sesti,L.

The protective effect of various Salmonella vaccines regimens against an experimental Salmonella Gallinarum challenge (SGNalr strain at 12 wk of age) was evaluated in two experiments. In Experiment 1 commercial brown layers were vaccinated according to one of the following programs: (i) two doses of a SE bacterin (Layermune SE; group 1); (ii) a first dose of a live SG9R vaccine (Cevac SG9R) followed by a SE bacterin (Layermune SE; group 2); (iii) one dose of each of two different multivalent inactivated vaccines containing SE cells (Corymune 4 & Corymune 7; group 3) or (iv) not vaccinated (group 4). In Experiment 2, broiler breeders were given the same vaccination treatments except for the group vaccinated with the multivalent vaccines. Overall, in...

Experimental infection of laying hens with Salmonella enterica serovar Gallinarum

Palavras-chave: Fowl Typhoid; Killed Salmonella vaccines; Live Salmonella vaccines; Salmonella Gallinarum; Salmonella Gallinarum challenge.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100010

Oliveira,Gláucia Helaine de; Berchieri Junior,Angelo; Fernandes,Alexandre César.

Experimental infections were set up in commercial laying birds, comprising a white relatively resistant line and a red susceptible line infecting with Salmonella enterica serovar Gallinarum. The major findings were that in susceptible birds clinical disease occurred in a dose-dependent manner. Faecal excretion occurred in susceptible birds almost up to death but also occurred in the more resistant line and in birds, which were convalescing. Removal of birds, which had died from the disease, from the environment, reduced the resultant mortality/morbidity and may be regarded as a useful measure for control.

Experimental Salmonella Gallinarum infection in light laying hen lines

Palavras-chave: Laying hens; Salmonella Gallinarum; Contact infection.

Ano: 2005

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000100011

Berchieri Júnior,Angelo; Oliveira,Gláucia Helaine de; Pinheiro,Lucas Augusto Soeiro; Barrow,Paul A..

Although the epidemiology of fowl typhoid in chickens supposedly involves a vertical transmission stage, a previous work run by the authors has suggested that this did not happen in a commercial line of laying hens highly susceptible to systemic disease with Salmonella Gallinarum. A new experiment was carried out in two other lines of commercial layers, considerably more resistant than those used in the previous study. Clinical fowl typhoid was not observed, but Salmonella Gallinarum was isolated from the spleen and liver four weeks after infection and, sporadically, from the ovary.

Tipo: Info:eu-repo/semantics/other

Palavras-chave: Salmonella Gallinarum; White Leghorn; Infection; Laying hens.

Ano: 2000

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000100012

Infection of commercial laying hens with Salmonella Gallinarum: clinical, anatomopathological and haematological studies

Freitas Neto,OC; Arroyave,W; Alessi,AC; Fagliari,JJ; Berchieri,A.

This study aimed at evaluating the susceptibility of commercial laying hens to Salmonella Gallinarum (SG). Two experiments were carried using a mutant strain of Salmonella Gallinarum resistant to nalidix acid (SGNALr). In the first trial, the resistance of birds was evaluated based on clinical signs, faecal shedding, and mortality. It was carried out with six lines of commercial layers being three light white layers, considered to be resistant to SG (W1, W2, W3), and three semi-heavy brown varieties (B1, B2, B3), considered susceptible to SG. Each group contained 15 one-day-old birds. Hens were inoculated in the crop at 5 days of age with 0.2 mL of SGNALr neat culture. In addition, to each brown variety, a new group of 15 birds was challenged with 0.2mL of...

Molecular differentiation between Salmonella enterica subsp enterica serovar Pullorum and Salmonella enterica subsp enterica serovar Gallinarum

Palavras-chave: Fowl typhoid; Hematology; Laying hens; Salmonella Gallinarum; Susceptibility.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200010

Ribeiro,Simone Alves Mendes; Paiva,Jaqueline Boldrin de; Zotesso,Fábio; Lemos,Manoel Victor Franco; Berchieri Júnior,Ângelo.

S. Pullorum (SP) and S. Gallinarum (SG) are very similar. They are the agents of pullorum disease and fowl typhoid, respectively, and the two diseases are responsible for economic losses in poultry production. Although SP and SG are difficult to be differentiated in routine laboratory procedures, the ability to metabolize ornithine is a biochemical test that may be used to achieve this aim. While SP is able to decarboxylate this amino acid, SG is not. However, the isolation of strains showing atypical biochemical behavior has made this differentiation difficult. One of the genes associated with the metabolization of the amino acid ornithine is called speC, and is found in both serovars. The analysis of 21 SP and 15 SG strains by means of PCR did not enable...

Molecular differentiation of Salmonella Gallinarum and Salmonella Pullorum by RFLP of fliC gene from Brazilian isolates

Palavras-chave: Salmonella Pullorum; Salmonella Gallinarum; Differentiation; PCR.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100032

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...

Reversion to virulence evaluation of a 9R vaccine strain of Salmonella enterica serovar gallinarum in commercial brown layers

Palavras-chave: FliC gene; Differentiation; Salmonella Gallinarum; Salmonella Pullorum.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400009

Okamoto,AS; Menconi,A; Gonçalves,GAM; Rocha,TS; Andreatti Filho,RF; Savano,EN; Sesti,L.

The live vaccine Cevac S. Gallinarum, made from a rough strain of Salmonella enterica subspecies enterica serotype Gallinarum is used for preventing fowl typhoid, a disease that still causes considerable economic losses in countries with a developing poultry industry. The objective of this paper was to evaluate a possible reversion to virulence of the strain used in a vaccine in commercial brown layers. Only Salmonella-free chicks were utilized. One hundred twenty (120) 12-day-old Dekalb brown layers divided in two trials were used. The first trial had six groups of 15 birds each. Birds of group 1 were vaccinated with 10 doses of Cevac S. Gallinarum subcutaneously and 10 doses orally, in a total of 20 doses of vaccine. Then the birds of groups 2, 3, 4, and...

Salmonella Gallinarum virulence in experimentally-infected Japanese quails (Coturnix japonica)

Palavras-chave: 9R strain; Fowl typhoid; Reversion to virulence; Salmonella Gallinarum; SG9R vaccine.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100007

Rocha-e-Silva,RC; Cardoso,WM; Teixeira,RSC; Albuquerque,ÁH; Horn,RV; Cavalcanti,CM; Lopes,ES; Gomes Filho,VJR.

Salmonella Gallinarum is the agent of fowl typhoid in poultry and infects mainly adult galliforms, causing significant economic losses in poultry production. Because quails are susceptible to this disease and quail production is becoming increasingly important in Brazil, this study was carried out to evaluate the virulence of Salmonella Gallinarum strain to quails. The inoculum was prepared from S. Gallinarum strain resistant to nalidixic acid. Forty eight 16-week-old Japanese quails were randomly distributed in three groups. Before the experiment, cloacal swabs were collected from all birds in order to confirm they were free from Salmonella spp. Cloacal swabs and fecal samples were collected on days 03, 06, 09, 12, and 15 post-inoculation. Birds that died...

Salmonelose em aves: estratégias básicas de prevenção.

Palavras-chave: Experimental inoculation; Mortality; Re-isolation; Salmonella Gallinarum.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100007

Infoteca-e

DUARTE, S. C.; MOTA, S. C. A.; BARBIERI, F.; GIL, D. F..

bitstream/item/181853/1/final8824.pdf

Tipo: Artigo de divulgação na mídia (INFOTECA-E)

Palavras-chave: Controle de doenças; Saúde aviária; Setor avícola; Sanidade Animal; Avicultura; Veterinária Preventiva; Profilaxia; Salmonelose; Salmonella Gallinarum; Salmonella Pullorum.

Ano: 2018

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1094447

The contribution of genes required for anaerobic respiration to the virulence of Salmonella enterica serovar Gallinarum for chickens

Paiva,J.B.; Penha Filho,R.A.C.; Pereira,E.A.; Lemos,M.V.F.; Barrow,P.A.; Lovell,M.A.; Berchieri Jr,A..

Salmonella enterica serovar Gallinarum (SG) is an intracellular pathogen of chickens. To survive, to invade and to multiply in the intestinal tract and intracellularly it depends on its ability to produce energy in anaerobic conditions. The fumarate reductase (frdABCD), dimethyl sulfoxide (DMSO)-trimethylamine N-oxide (TMAO) reductase (dmsABC), and nitrate reductase (narGHIJ) operons in Salmonella Typhimurium (STM) encode enzymes involved in anaerobic respiration to the electron acceptors fumarate, DMSO, TMAO, and nitrate, respectively. They are regulated in response to nitrate and oxygen availability and changes in cell growth rate. In this study mortality rates of chickens challenged with mutants of Salmonella Gallinarum, which were defective in...