Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala SE-750 07, Sweden.
Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala SE-750 07, Sweden.
Poult Sci. 2022 Jan;101(1):101521. doi: 10.1016/j.psj.2021.101521. Epub 2021 Oct 10.
Transport crates for poultry can contribute to the spread of pathogens, with those of public health interest, for example, Campylobacter, being of particular importance. A strict cleaning procedure and use of an effective disinfection method for transport equipment are thus important to avoid introduction of Campylobacter to chicken and poultry farms, particularly during flock thinning. This study evaluated the efficacy of the disinfection procedure currently in use at one of the largest slaughter plants in Sweden and compared the effects with those of other disinfection methods. The evaluation was based on treatment ability to reduce the presence and amount of indicator bacteria belonging to the family Enterobacteriaceae and total aerobic bacteria. In 4 trials, sodium hypochlorite, peracetic acid, and drying with hot air, with or without sodium hypochlorite for final disinfection, were compared. The analysis was based on 40 cotton swab samples taken in each treatment, 20 after the soaking stage and 20 after the final disinfection step. The results showed that use of a chemical disinfectant in combination with drying with hot air (dehumidifier) was the most effective treatment, with an average reduction of 3.4 log for total aerobic bacteria and 3.8 log for Enterobacteriaceae. Since all crates treated with hot air were dry, transport conditions for the birds also improved, particularly in cold weather. A disadvantage is that this treatment is energy-consuming and would require substantial technical changes to the current cleaning process, increasing operating costs at the slaughter plant. However, considering the contribution of improved crate cleaning to overall hygiene control within the poultry supply chain and the beneficial effect on animal welfare, the costs may be justified.
运输家禽的箱子可能会导致病原体传播，例如，公共卫生感兴趣的弯曲杆菌尤其重要。因此，严格的清洁程序和对运输设备使用有效的消毒方法对于避免弯曲杆菌进入鸡和家禽养殖场非常重要，尤其是在鸡群减少期间。本研究评估了瑞典最大的屠宰场之一目前使用的消毒程序的效果，并将其与其他消毒方法的效果进行了比较。该评估基于处理能力来减少属于肠杆菌科的指示菌和总需氧菌的存在和数量。在 4 次试验中，比较了次氯酸钠、过氧乙酸和热空气干燥，以及是否使用次氯酸钠进行最终消毒。分析基于每个处理中采集的 40 个棉签样本，20 个取自浸泡阶段，20 个取自最终消毒步骤。结果表明，化学消毒剂与热空气干燥（除湿器）联合使用是最有效的处理方法，总需氧菌和肠杆菌科的平均减少量分别为 3.4 对数和 3.8 对数。由于所有用热空气处理的箱子都是干燥的，因此鸟类的运输条件也得到了改善，特别是在寒冷的天气下。缺点是这种处理方法耗能大，需要对当前的清洁过程进行重大技术更改，从而增加屠宰场的运营成本。然而，考虑到改善箱子清洁对整个家禽供应链中卫生控制的贡献以及对动物福利的有益影响，这些成本可能是合理的。
