Aiming at investigating the potential sources of Campylobacter spp. contamination in pig slaughterhouse in eastern China, a total of 2056 samples were collected in pork production chain stretching from the upstream farm to the slaughterhouse, including 54 cloacal swabs from 54 live pigs on farm, 1726 samples from 214 pig carcasses along the eight main steps in the slaughtering line, and 276 samples from slaughtering environment. Campylobacter spp. were found, may be propagated in each slaughtering step, with an average prevalence of 19.3% (333/1726). The isolation rate of Campylobacter spp. in samples collected before the slaughter (42.5%, 4.87 ± 1.23 log colony-forming units [CFU]/g), dehairing (28%, 2.40 ± 0.49 log CFU/500 cm²), and evisceration (29.4%, 2.50 ± 0.54 log CFU/500 cm²) were significantly higher than other slaughter processes (p < 0.05). The prevalence of Campylobacter spp. of pigs on farm was 18.5% (10/54), compared to the slaughtering environment, which was 27.9% (77/276). Campylobacter spp. isolates were obtained from a batch of samples in slaughterhouse and farm belonged to ST-828 complex. Interventions are required to minimize Campylobacter spp. contamination in slaughtering line, especially during dehairing and evisceration. The upstream farm was an additional and usually neglected source of contamination. These findings may provide a new perspective regarding the safety provision of Campylobacter spp. contamination in pork meat production.

中文翻译：

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弯曲杆菌属的流行。华东地区生猪屠宰线污染源分析。

旨在调查弯曲杆菌属的潜在来源。华东地区生猪屠宰场污染，从上游养殖场到屠宰场的猪肉生产链共采集样本2056个，其中养殖场54头生猪泄殖腔拭子54个，8个主要步骤214头猪尸体1726个样本在屠宰线上，276个屠宰环境样本。弯曲杆菌属 被发现，可以在每个屠宰步骤中繁殖，平均流行率为 19.3% (333/1726)。弯曲杆菌属的分离率。在屠宰前收集的样品中 (42.5%, 4.87 ± 1.23 log 菌落形成单位 [CFU]/g)，脱毛 (28%, 2.40 ± 0.49 log CFU/500 cm ²) 和内脏 (29.4%, 2.50 ± 0.54 log CFU/500 cm ² ) 显着高于其他屠宰过程 ( p  < 0.05)。弯曲杆菌属的流行。与屠宰环境的 27.9% (77/276) 相比，农场猪只的比例为 18.5% (10/54)。弯曲杆菌属 从属于 ST-828 复合体的屠宰场和农场的一批样品中获得分离株。需要进行干预以尽量减少弯曲杆菌属。屠宰线中的污染，特别是在脱毛和内脏过程中。上游农场是另一个通常被忽视的污染源。这些发现可能为弯曲杆菌的安全提供提供新的视角属 猪肉生产中的污染。