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Listeria monocytogenes in poultry: Detection and strain characterization along an integrated production chain in Italy

机译：Poulteria单核细胞增生在家禽中：意大利综合生产链的检测和应变特征

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摘要

In this study, thirteen batches of broiler chicken from an integrated Italian poultry company were investigated for the detection of Listeria monocytogenes. The prevalence was evaluated in faeces samples at farm level and after transport, caecal contents and carcass neck skin from 2 slaughterhouses (M1and M2), for a total of 2080 samples, throughout a 27-month period. No positive results were recorded in faeces, while the overall prevalence of contamination in carcass neck skin was 26.7%. Then, 123 isolates out of 139 positive skin samples, with the prevalent serotypes 4b (76%) and l/2b (94%) from slaughterhouses Ml and M2 respectively, were PFGE characterized, showing the presence of 18 different pulsotypes and 8 genetic clusters. The same pulsotypes were found in carcasses from different farms, but slaughtered in the same abattoir, highlighting the environmental origin of contamination. The persistence of the pathogen over long time seemed to be very likely, considering that undistinguishable pulsotypes were found in carcasses slaughtered in the same slaughterhouse after periods up to 18 months long. The implementation of cleaning and sanitation at slaughterhouse level could represent the main factor for the control of such pathogen in the poultry meat processing line.
机译：在这项研究中，研究了来自一体化意大利家禽公司的十三批肉鸡，用于检测李斯特菌单核细胞增生。在农场水平和运输，尾含量和胴体颈部皮肤中评估患病率，从2个屠宰场（M1和M2），共有2080个样品，在整个27个月内，共有2080个样品。粪便中没有记录阳性结果，而胴体颈部皮肤污染的总体普及率为26.7％。然后，分别为139个阳性皮肤样品中的123个分离物，分别具有来自屠宰场Ml和M2的普遍血清型4b（76％）和L / 2b（94％），其特征在于，显示出存在18种不同的脉冲型和8种遗传簇。来自不同农场的尸体中发现了相同的脉冲型，但在相同的Abattoir中屠杀，突出了污染的环境来源。考虑到在长期18个月后，考虑到在长期18个月后在同一个屠宰场屠宰的屠宰中发现不可区分的脉冲型，病原体的持续存在似乎很可能。屠宰场水平的清洁和卫生的实施可以代表家禽肉加工生产线中这种病原体的主要因素。

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  • 来源
    《Food microbiology》 |2020年第10期|103533.1-103533.7|共7页
  • 作者

    Luigi Iannetti; Maria Schirone; Diana Neri; Pierina Visciano; Vicdalia Aniela Acciari; Gabriella Centorotola; Maria Silvia Mangieri; Marina Torresi; Gino Angelo Santarelli; Violeta Di Marzio; Cristina Marfoglia; Giacomo Migliorati; Francesco Pomilio;

  • 作者单位

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Faculty of Bioscience and Technology for Food Agriculture and Environment University of Teramo Via R. Balzarini 1 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Faculty of Bioscience and Technology for Food Agriculture and Environment University of Teramo Via R. Balzarini 1 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Faculty of Bioscience and Technology for Food Agriculture and Environment University of Teramo Via R. Balzarini 1 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

    Istituto Zooprofilattico Sperimentale dell'Abnazo e del Molise 'G. Caporale' Via Campo Boario 64100 Teramo Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Listeria monocytogenes; Prevalence; Poultry; Slaughterhouse; Faeces; Skin;

    机译：李斯特菌;患病率;家禽;屠宰场;粪便;皮肤;

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