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  • Title: Prevalence and dissemination of Salmonella serotypes along the slaughtering process in Brazilian small poultry slaughterhouses.
    Author: Fuzihara TO, Fernandes SA, Franco BD.
    Journal: J Food Prot; 2000 Dec; 63(12):1749-53. PubMed ID: 11131902.
    Abstract:
    Salmonella is the leading cause of human foodborne infections in Latin America, and poultry meat is one of the main vehicles. Small poultry slaughterhouses (fewer than 200 birds slaughtered per day) represent an important economic activity in certain regions. The slaughtering process in these abattoirs is manual and rudimentary, and frequently the hygienic conditions are poor. This study reports results of a detailed evaluation of the prevalence of Salmonella serotypes in carcasses, utensils, and environmental samples collected in 60 small Brazilian slaughterhouses. In the second step of the study, one of these slaughterhouses was selected to monitor the dissemination of Salmonella along the slaughtering process. For testing, conventional procedures were used: preenrichment in buffered peptone water (35 degrees C for 24 h), selective enrichment in Selenite-cystine (35 degrees C for 24 h), tetrathionate and Rappaport-Vassiliadis broths (42 degrees C for 24 h), plating on bismuth-sulfite and brilliant green agars (35 degrees C for 24 h), proper biochemical testing, and complete serotyping. Forty-one percent of samples harbored Salmonella spp., including 42% of carcasses, 23.1% of utensils, 71.4% of water, and 71.4% of freezers and refrigerators. Seventeen serotypes were detected. Salmonella Enteritidis predominated (30%), followed by Salmonella Albany (12%), Salmonella Hadar (12%), Salmonella Indiana (10%), and I 4,12:z:- (8%). All samples collected along the slaughtering process in the selected slaughterhouse were Salmonella positive. Five serotypes were detected, including Salmonella Albany, Salmonella Hadar, Salmonella Agona, Salmonella Emek, and Salmonella Indiana. More than 30% of the samples contained more than one serotype, and 12.5% presented three serotypes. The widespread occurrence of Salmonella in small slaughterhouses reinforces the need for implementation of effective control measures.
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