Hansson Ingrid, Dzieciolowski Tomasz, Rydén Jesper, Boqvist Sofia
Department of Animal Biosciences, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden.
Department of Animal Biosciences, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden; Kronfågel AB, Scandistandard, SE-104 25 Stockholm, Sweden.
Poult Sci. 2025 Sep;104(9):105453. doi: 10.1016/j.psj.2025.105453. Epub 2025 Jun 18.
Proper cleaning and disinfection (C&D) of broiler houses is essential to eliminate pathogenic bacteria and minimize the risk of transmitting harmful microorganisms to subsequent broiler flocks. This study aimed to assess the effectiveness of various C&D methods, examine key factors influencing broiler house hygiene, and evaluate the impact of commonly used disinfectants. In the first part of the study, C&D procedures were evaluated. Eighteen broiler producers collected dip slide samples after disinfection from 20 control points within a broiler house over four production rotations, resulting in a total of 1,440 samples. The second part of the study assessed the effectiveness of four commonly used disinfectants on farms with broiler houses divided into four compartments, each cleaned under the same standardized protocol. Sampling was conducted by collecting 15 dip slides from each compartment both before and after disinfection over two production rounds at each farm, resulting in a total of 720 samples. Despite the large sample size, only a few factors significantly impacted the results. Pre-soaking surfaces with water before cleaning, combined with the use of detergents, were two improving factors. Additionally, fogging and high-pressure washing were also effective in reducing bacterial loads. To maximize bacterial reduction, disinfectants should be evenly applied across all surfaces. Neither the age nor the size of the houses showed a significant correlation with bacterial counts. When comparing the effectiveness of different disinfectants under identical cleaning routines and broiler house conditions, no significant differences were found between the substances. However, variations were observed among the different broiler producers, with one farm showing a greater bacterial reduction, with a reduction above 400 CFU at more control points compared to the other farms suggesting that overall farm hygiene plays a crucial role. Ultimately, effective C&D does not depend on the disinfectant but, rather, on the combined influence of all C&D variables, most importantly, on the diligence and technique of the person responsible for the process.
对肉鸡舍进行适当的清洁和消毒对于消除致病细菌以及将有害微生物传播给后续肉鸡群的风险降至最低至关重要。本研究旨在评估各种清洁和消毒方法的有效性，研究影响肉鸡舍卫生的关键因素，并评估常用消毒剂的影响。在研究的第一部分，对清洁和消毒程序进行了评估。18 个肉鸡养殖户在四个生产周期内从肉鸡舍内的 20 个控制点消毒后采集了浸片样本，共获得 1440 个样本。研究的第二部分评估了四种常用消毒剂在分为四个隔间的肉鸡舍农场中的有效性，每个隔间均按照相同的标准化方案进行清洁。在每个农场的两个生产周期内，在消毒前后从每个隔间采集 15 个浸片进行采样，共获得 720 个样本。尽管样本量很大，但只有少数因素对结果有显著影响。清洁前用水预浸表面并结合使用洗涤剂是两个改进因素。此外，喷雾和高压冲洗在减少细菌负荷方面也很有效。为了最大程度地减少细菌，消毒剂应均匀地应用于所有表面。鸡舍的年龄和大小与细菌计数均无显著相关性。在相同的清洁程序和肉鸡舍条件下比较不同消毒剂的有效性时，未发现这些物质之间存在显著差异。然而，不同的肉鸡养殖户之间存在差异，一个农场的细菌减少量更大，与其他农场相比，更多控制点的细菌减少量超过 400 CFU，这表明整体农场卫生起着至关重要的作用。最终，有效的清洁和消毒并不取决于消毒剂，而是取决于所有清洁和消毒变量的综合影响，最重要的是，取决于负责该过程的人员的勤勉程度和技术。
