A potential source of pathogenic bacteria in ground beef is the lymphatic system, specifically the lymph nodes. Bacteria have been isolated from the lymph nodes of cattle at slaughter; however, most studies have dealt with mesenteric lymph nodes, which are not normally incorporated into ground beef. The objective of the current study was to determine the prevalence of Escherichia coli in bovine lymph nodes. Bovine lymph nodes (n = 146) were collected from 73 carcasses at a commercial slaughterhouse. 138 lymph nodes sampled were obtained from 69 regular slaughter, and the remainder 8 were obtained from 4 emergency slaughter. Subiliaci lymph nodes were collected for this study. E. coli prevalence in the lymph node samples was high, with an overall prevalence of 67.12%. Lymph nodes from emergency slaughter carcasses had a higher prevalence (75.00%) of E. coli than did those from regular slaughter carcasses (67.12%).
STUDIO PRELIMINARE SULLA PREVALENZA DI ESCHERICHIA COLI IN LINFONODI DI CARCASSE BOVINE
CENCI GOGA, Beniamino Terzo;SECHI, PAOLA;
2012
Abstract
A potential source of pathogenic bacteria in ground beef is the lymphatic system, specifically the lymph nodes. Bacteria have been isolated from the lymph nodes of cattle at slaughter; however, most studies have dealt with mesenteric lymph nodes, which are not normally incorporated into ground beef. The objective of the current study was to determine the prevalence of Escherichia coli in bovine lymph nodes. Bovine lymph nodes (n = 146) were collected from 73 carcasses at a commercial slaughterhouse. 138 lymph nodes sampled were obtained from 69 regular slaughter, and the remainder 8 were obtained from 4 emergency slaughter. Subiliaci lymph nodes were collected for this study. E. coli prevalence in the lymph node samples was high, with an overall prevalence of 67.12%. Lymph nodes from emergency slaughter carcasses had a higher prevalence (75.00%) of E. coli than did those from regular slaughter carcasses (67.12%).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
