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首页> 外文会议>ICoMST 2011;International conference of meat science and technology >Occurrence of human enteropathogenic Yersinia spp. in pigs and contamination of pork carcasses during slaughter
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Occurrence of human enteropathogenic Yersinia spp. in pigs and contamination of pork carcasses during slaughter

机译：人肠道致病性耶尔森氏菌的发生。屠宰过程中猪的肉和猪尸体的污染

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Human pathogenic Yersinia enterocolitica and Y. pseudotuberculosis typically cause enteric infections in humans, mainly young children. Pigs are the main animal reservoir for pathogenic Y. enterocolitica and infection in humans is often acquired by the consumption of contaminated pork. The aim of this work was to determine the contamination of pig carcasses with enteropathogenic Yersinia spp. in Belgium. Therefore, 180 pig carcasses were sampled in 9 different slaughterhouses. From each animal, tonsils, rectal content and carcass swabs were analysed for enteropathogenic Yersinia spp. using direct plating, selective enrichment and cold enrichment. All samples were' taken after evisceration, but before chilling. Pathogenic Y. enterocolitica were isolated from the tonsils of 103 pigs (57.2%) and rectal contents of 36 pigs (20.0%). Twenty-eight pigs were positive for pathogenic Y. enterocolitica in both tonsils and rectal content, while 75 and 8 pigs were only Y. enterocolitica positive in tonsils and rectal content, respectively. All isolated Y. enterocolitica strains belonged to bioserotype 4/O:3. Tonsils and rectal content from 4 and 1 pig(s) were positive for Y. pseudotuberculosis, respectively. Regarding carcass samples, 76 (42.2%) pig carcasses were contaminated with enteropathogenic Yersinia spp. Pathogenic Y. enterocolitica were mostly recovered from the mandibular region (59/180), followed by the sternal region (31/180), medial site just before the sacrum (17/180), and pelvic duct (15/180). In conclusion, a high proportion of pigs carry pathogenic Yersinia spp. in their tonsils or intestines during slaughter. Moreover, a considerable number of pig carcasses is positive on one or more of the sampled carcass sites.
机译：人致病性小肠结肠炎耶尔森氏菌和假结核耶尔森氏菌通常在人类（主要是幼儿）中引起肠道感染。猪是致病性小肠结肠炎耶尔森氏菌的主要动物库，人类的感染往往是通过食用受污染的猪肉而获得的。这项工作的目的是确定猪尸体被肠致病性耶尔森氏菌污染。在比利时。因此，在9个不同的屠宰场采样了180头猪的尸体。对于每只动物，分析扁桃体，直肠含量和car体拭子的肠致病性耶尔森氏菌。采用直接电镀，选择性富集和冷富集。所有样品均在去内脏后但在冷藏之前采集。从103头猪（57.2％）的扁桃体和36头猪（20.0％）的直肠含量中分离出致病性小肠结肠炎耶尔森氏菌。病原体小肠结肠炎耶尔森氏菌中有28头猪的扁桃体和直肠含量均为阳性，而扁桃体和直肠中只有75头和8头猪肠炎耶尔森氏菌呈阳性。所有分离的小肠结肠炎耶尔森氏菌菌株均属于生物血清型4 / O：3。 4头和1头猪的扁桃体和直肠含量分别为假结核耶尔森氏菌阳性。关于car体样品，有76（42.2％）个猪car体被肠道致病性耶尔森氏菌污染。病原性小肠结肠炎耶尔森菌主要从下颌区（59/180）恢复，其次是胸骨区（31/180），just骨前的内侧部位（17/180）和骨盆导管（15/180）。总之，高比例的猪带有致病性耶尔森氏菌。在屠宰期间在其扁桃体或肠中。此外，在一个或多个采样的屠体部位，相当数量的猪屠体呈阳性。

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