Search National Agricultural Library Digital Collections

NALDC Record Details:

Salmonella prevalence in bovine lymph nodes differs among feedyards

Permanent URL:
http://handle.nal.usda.gov/10113/57355
File:
Download [PDF File]
Abstract:
Lymphatic tissue, specifically lymph nodes, is commonly incorporated into ground beef products as a component of lean trimmings. Salmonella and other pathogenic bacteria have been identified in bovine lymph nodes, which may impact compliance with the Salmonella performance standards for ground beef established by the U.S. Department of Agriculture. Although Salmonella prevalence has been examined among lymph nodes between animals, no data are currently available regarding feedyard origin of the cattle origin and Salmonella prevalence. Bovine lymph nodes (279 superficial cervical plus 28 iliofemoral = 307) were collected from beef carcasses at a commercial beef harvest and processing plant over a 3-month period and examined for the prevalence of Salmonella. Cattle processed were from seven feedyards (A through G). Salmonella prevalence was exceptionally low (0% of samples were positive) in cattle from feedyard A and high (88.2%) in cattle from feedyard B. Prevalence in the remaining feedyards ranged widely: 40.0% in feedyard C, 4.0% in feedyard D, 24.0% in feedyard E, 42.9% in feedyard F, and 40.0% in feedyard G. These data indicate the range of differences in Salmonella prevalence among feedyards. Such information may be useful for developing interventions to reduce or eliminate Salmonella from bovine lymph nodes, which would assist in the reduction of Salmonella in ground beef.
Author(s):
Ashley N. Haneklaus , Kerri B. Harris , Davey B. Griffin , Thomas S. Edrington , Lisa M. Lucia , Jeffrey W. Savell
Subject(s):
Salmonella , bacterial contamination , beef carcasses , beef cattle , feedlots , food contamination , ground beef , lymph nodes , meat processing plants , United States
Source:
Journal of food protection 2012 6 1 v.75 no.6
Language:
English
Year:
2012
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.