OCCURRENCE OF YERSINIA-ENTEROCOLITICA O/3, LISTERIA-MONOCYTOGENES O/4 AND THERMOPHILIC CAMPYLOBACTER SPP IN SLAUGHTER PIGS AND CARCASSES IN TRINIDAD

被引:22
作者
ADESIYUN, AA [1 ]
KRISHNAN, C [1 ]
机构
[1] ONTARIO MINIST HLTH, LAB SERV BRANCH, CLIN BACTERIOL SECT, ETOBICOKE, ON, CANADA
关键词
D O I
10.1016/S0740-0020(95)80085-9
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Pigs slaughtered at an abattoir in Trinidad were sampled for the occurrence of Yersinia, Listeria and Campylobacter at different sites. The antibiograms of Yersinia isolates were also determined. Of 141 samples each of rectal and tongue swabs taken, 23(16.1%) and 9(6.4%) were positive for Y. enterocolitica compared to 11(7.3%) of 150 tonsillar samples yielding the organism. Rectal swabs had a statistically significantly (P less-than-or-equal-to 0.05, chi2) higher frequency of isolation than tongue or tonsillar swabs. All 43 isolates of Y. enterocolitica were serotype O:3 biotype 4. From a total of 139 rectal swabs cultured for thermophilic Campylobacter, 75(51.8%) were C. coli and 3(2.2%) were positive for C. jejuni. The difference was statistically significant (P less-than-or-equal-to 0.001; chi2). Carcass swabs also yielded significantly more C. coli, 27(17.4%) than C. jejuni, 4(2.6%) of 155 samples cultured. Seven (5.0%) of 139 rectal swabs tested were positive for Listeria monocytogenes while only 3(1.9%) of 155 carcass samples yielded the organism but the difference was not statistically significantly (P greater-than-or-equal-to 0.05; chi2). Nine of 10 isolates of Y. monocytogenes were serotype 4 while one was serotype 1. Resistance of the 43 isolates of Y. enterocolitica was highest to pencillin (100.0%), neomycin (100.0%) but least to gentamycin (2.3%) and sulfamethoxazole/trimethoprim (0.0%). It was concluded that Y. enterocolitica serotype O:3, biotype 4 is predominant in pigs in Trinidad and the isolation of L. monocytogenes, particularly serotype 4, and C. coli and C. jejuni from pork carcasses may pose a health risk to consumers.
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页码:99 / 107
页数:9
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