Infecção experimental de embriões de frangos de corte com Salmonella enterica sorovar Enteritidis fagotipo 4
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Data
2008-10
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Universidade Federal de Minas Gerais, Escola de Veterinária
Resumo
The experimental infection of Salmonella Enteritidis phagotype 4 (SEpt4) was evaluated in broilers embryos to verify the ability of penetration through eggshell and the effect of albumen inoculation considering embryo mortality, hatchability, and intestinal colonization of hatched chicks. Two trials were conducted using in four treatments each, totaling 200 and 194 fertile eggs of Ross and ISA Label lineages, respectively. Non-sanitized eggs were inoculated on the shell with Salmonella Enteritidis (Treatment 1) or placebo (Treatment 2); and eggs were inoculated in albumen with Salmonella Enteritidis (Treatment 3) or placebo (Treatment 4). Immediately after inoculation, the eggs were incubated and embryo mortality was evaluated after 96, 432, and 528 hours. The results showed that Salmonella Enteritidis inoculated on egg shell remained active there and in shell membranes during all incubation period and migrated to the interior of the eggs; however, it did not affect the incubation parameters. It was observed that Salmonella Enteritidis inoculated in albumen caused late embryo mortality in Ross (17.0%) and ISA Label (13.0%) lineages, and originated chicks with high frequency of intestinal colonization by Salmonella Enteritidis, being 76.7% and 26.7% for Ross and ISA Label, respectively.
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Frango de corte, Salmonella enteritidis, Infecção, Casca, Albúmen, Transmissão vertical, Broiler, Infection, Egg shell, Albumen, Vertical infection
Citação
ANDRADE, M. A.; MESQUITA, A. J.; STRINGHINI, J. H.; PEDROSO, A. A.; LEANDRO, N. S. M.; CAFÉ, M. B.; MATTOS, M. S. Infecção experimental de embriões de frangos de corte com Salmonella enterica sorovar Enteritidis fagotipo 4. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 60, n. 5, p. 1110-1117, out. 2008.