Data/hora: 12/06/2024 09:52:07

Provedor de dados: | 89
País: | Brazil
Título: | In vitro characterization and in vivo properties of Salmonellae lytic bacteriophages isolated from free-range layers
Autores: | Fiorentin,L; Vieira,ND; Barioni Júnior,W; Barros,S.
Data: | 2004-06-01
Ano: | 2004
Palavras-chave: | Bacteriophages; Food poisoning; Poultry; Salmonella.
Resumo: | Occurrence of food poisoning related to Salmonella-contaminated eggs and chicken meat has been frequent in humans. Salmonella Enteritidis (SE) and Salmonella Typhimurium (ST) are included among the most important paratyphoid salmonellae associated with chicken meat and eggs. Elimination of Salmonella at the pre-harvest stage can play a significant role in preventing the introduction of this pathogen into the food chain and consequently in the reduction of food poisoning in humans. Bactericidal bacteriophages may provide a natural, nontoxic, feasible and non-expensive component of the multi-factorial approach for a pre-harvest control of Salmonella in poultry. Five bacteriophages lytic for SE PT4 and ST were obtained from 107 samples of feces of free-range layers in Brazil. All bacteriophages were characterized in vitro and in vivo, showing head and tail morphology and dsDNA as nucleic acids. Results of "in vivo" studies suggested that bacteriophages do not remain in Salmonella-free birds longer than one day, whereas they multiply in Salmonella-infected birds for longer periods. Besides, selection for phage-resistant SE PT4 did not seem to occur in the short term. Isolated bacteriophages will be investigated for their potential for pre-harvest biocontrol of SE PT4 in poultry.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200009
Editor: | Fundação APINCO de Ciência e Tecnologia Avícolas
Relação: | 10.1590/S1516-635X2004000200009
Formato: | text/html
Fonte: | Brazilian Journal of Poultry Science  v.6 n.2 2004
Fonte: | info:eu-repo/semantics/openAccess