Henry Alexandra, Letellier Ann, Côté Jean-Charles, Desmarais Gabriel, Lachapelle Virginie, Bergeron Nadia, Lewandowsky Sylvette, Fravalo Philippe
Pathologie et microbiologie, Faculté de médecine vétérinaire, Université de Montréal, Saint Hyacinthe, Quebec, Canada.
Vet Rec Open. 2019 Sep 27;6(1):e000269. doi: 10.1136/vetreco-2017-000269. eCollection 2019.
To evaluate whether pig farms interconnected within the same cooperative share similar contamination patterns.
Ten finishing pig farms within a 100 km radius of a common slaughterhouse were selected. Their inclusion was based on their association to the same cooperative and the sharing of common resources: piglets, feed, swine transporters, slaughterhouse, technicians and veterinarians.
Each farm was visited three times over a 10-month period. Pig faeces, the barn front door handle, the feed pipeline, mobile objects (shovel, balance and pig board), the landing stage, the concrete slab of the feed bins, the tire tracks left on the pathways by the animal feed truck, the pig delivery truck and the carcase knacker truck and the mudguards and cabin carpets of the veterinarian and technician vehicles on their arrival at the farm were all analysed for the presence of .
All farms were not equally contaminated with . Whereas some farms yielded up to 12 isolates, other farms were free. Some locations, most notably the landing stage, were more contaminated than others. contamination was dynamic in time. Some contaminations seen on farms, on specific locations on the first visit, had disappeared on the second and third visits, but new contaminations were detected on different locations.
Contamination with was not disseminated through the network of the 10 pig farms interconnected within the same cooperative but was rather most often restricted in time to specific locations on specific farms.
评估同一合作社内相互关联的养猪场是否具有相似的污染模式。
在一家共同屠宰场半径100公里范围内选择了10个育肥猪场。这些猪场的入选基于它们与同一合作社的关联以及对共同资源的共享：仔猪、饲料、猪运输车辆、屠宰场、技术人员和兽医。
在10个月的时间里，每个猪场被访问了三次。对猪粪便、 barn前门把手、饲料管道、移动物体（铲子、秤和猪板）、装卸平台、饲料仓的混凝土板、动物饲料卡车、生猪运输卡车和屠体处理卡车在道路上留下的轮胎痕迹以及兽医和技术人员车辆到达农场时的挡泥板和车厢地毯进行了分析，以检测是否存在[具体物质未给出]。
所有猪场受到[具体物质未给出]的污染程度并不相同。有些猪场最多可分离出12株[具体物质未给出]，而其他猪场则未检测到。一些地点，最明显的是装卸平台，比其他地点污染更严重。[具体物质未给出]污染随时间变化。在首次访问时，在猪场的特定地点发现的一些污染在第二次和第三次访问时消失了，但在不同地点检测到了新的污染。
[具体物质未给出]污染并非通过同一合作社内相互关联的10个养猪场网络传播，而是最常局限于特定农场的特定地点，且随时间变化。
