Comparative study of egg contamination with Salmonella Heidelberg and Salmonella Typhimurium / Estudo comparativo da contaminação de ovos com Salmonella Heidelberg e Salmonella Typhimurium
Osowski, Germana Vizzotto; Baron, Lana Flávia; Coldebella, Arlei; Fonseca, Francisco Noé; Mota, Sandra Camile Almeida; Degenhardt, Roberto; Duarte, Sabrina Castilho.
Braz. j. vet. res. anim. sci
; 56(1)2019.
Artículo
en Portugués
| VETINDEX | ID: vti-743133
Cases of salmonellosis in humans have been associated with consumption of eggs contaminated with this bacterial pathogen due to insufficient heat treatment. The most prevalent serotypes of Salmonella in Brazil include serotypes Enteritidis, Typhimurium, and Heidelberg. The first two serotypes are major causes for eggs to be withheld from sale and for recalls over Salmonella contamination concerns in both domestic and foreign markets. Eggs may be contaminated through transovarian infection (transovarial transmission) due to the presence of the microorganism in the hens oviduct and bacterial penetration of the eggshell. There is little data in the literature on the susceptibility of egg contamination and eggshell penetration by Brazilian serotypes of Salmonella. The present study aimed to evaluate the ability of S. Heidelberg and S. Typhimurium serotypes to penetrate through the eggshell and detect these bacteria in the albumen and yolk according to the thickness of the eggshell. SPF (specific-pathogen-free) eggs were artificially contaminated by contact with moist cotton containing Salmonella (15 x 108 CFU/ml). Eggs were divided into the following groups negative control (not contaminated), S. Heidelberg, and S. Typhimurium. Subsequently, these eggs were incubated at 37C, and their contents analyzed after 4 h and 24 h of incubation. The evaluation (assessment) of the contamin
Biblioteca responsable:
BR68.1
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