Evaluation of the chicken crop as a source of Salmonella contamination for broiler carcasses

Much previously published research has focused on the role of cecal and intestinal Salmonella contamination of poultry carcasses within commercial processing plants. Presently, we have evaluated the persistence of experimentally inoculated Salmonella enteritidis in the crops and ceca of commercial b...

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Bibliographic Details
Published in:Poultry science 1995-09, Vol.74 (9), p.1548-1552
Main Authors: Hargis, B.M. (Texas Agricultural Experiment Station, College Station, TX.), Caldwell, D.J, Brewer, R.L, Corrier, D.E, DeLoach, J.R
Format: Article
Language:English
Subjects:
Animals
BIODEGRADACION
BIODEGRADATION
CANAL ANIMAL
CARCASSE
Cecum - microbiology
Chickens - microbiology
Crop, Avian - microbiology
ESOFAGO
Food Microbiology
INFECCION
INFECCION EXPERIMENTAL
INFECTION
INFECTION EXPERIMENTALE
INTESTIN
INTESTINOS
Meat - microbiology
OESOPHAGE
POLLO DE ENGORDE
POULET DE CHAIR
SALMONELLA ENTERITIDIS
Salmonella enteritidis - isolation & purification
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Summary:Much previously published research has focused on the role of cecal and intestinal Salmonella contamination of poultry carcasses within commercial processing plants. Presently, we have evaluated the persistence of experimentally inoculated Salmonella enteritidis in the crops and ceca of commercial broiler chickens during the last week of growth (Weeks 6 to 7) and the presence of crop and cecal Salmonella in 7-wk-old broilers in a commercial processing plant. When broilers were inoculated with 1 X 10(6) cfu S. enteritidis at 6 wk of age by oral gavage, the incidence of crop and cecal contamination was equivalent 2 d after challenge (30%), with only 1 of 29 crops contaminated and of 29 ceca contaminated at 7 d following challenge. When broilers were inoculated with 1 X 10(8) cfu S. enteritidis at 6 wk of age by oral gavage, 2 d after challenge the crops and ceca were observed to be 57 and 67% positive for S. enteritidis, respectively. Seven days after inoculation with 1 X 10(8) S. enteritidis, the crops and ceca were 37 and 57% positive, respectively, for the challenge organism. At a commercial broiler processing plant, 286 of 550 crops from three flocks were Salmonella-positive, whereas only 73 of 500 ceca from these flocks were contaminated. Furthermore, data from this plant indicated that the crops were far more likely to rupture than ceca (86-fold) during processing, increasing the possibility of carcass contamination with Salmonella derived from crop contents. The results of these studies suggest that the crop may serve as a source of carcass contamination with Salmonella within some processing plants
ISSN:0032-5791
1525-3171
DOI:10.3382/ps.0741548