Mannion C, Leonard F C, Lynch P B, Egan J
School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Dublin 4, Ireland.
Vet Rec. 2007 Sep 15;161(11):371-5. doi: 10.1136/vr.161.11.371.
Little is known about the effectiveness of the cleaning and disinfection methods used on commercial pig farms either in Ireland or worldwide. A National Salmonella Control Programme was implemented in Ireland in August 2002 to monitor and control the infection of pigs with Salmonella species. Commercial pig herds must be categorised according to their Salmonella status as either category 1, 2 or 3, having a serological prevalence of infection with Salmonella serotypes up to 10 per cent, between 10 and 50 per cent or more than 50 per cent, respectively. The aim of this study was to assess the efficacy of washing and disinfecting finisher units on category 1 and category 3 farms in reducing or eliminating the levels of contamination. Counts of Enterobacteriaceae were used as indicators of the contamination of the environment with enteric bacteria, which could include Salmonella species. Samples were taken from the pen floors, feeders and drinkers of seven category 1 and seven category 3 farms, and Enterobacteriaceae and salmonellae were enumerated in each sample. The results suggested that intensive cleaning and disinfection was effective at reducing levels of Enterobacteriaceae on the pen floors of both categories, but that residual contamination remained on the surfaces of the feeders and drinkers on all the farms, particularly on the category 3 farms.
无论是在爱尔兰还是在全球范围内，人们对商业养猪场使用的清洁和消毒方法的效果了解甚少。2002年8月，爱尔兰实施了一项国家沙门氏菌控制计划，以监测和控制猪感染沙门氏菌的情况。商业猪群必须根据其沙门氏菌感染状况分为1类、2类或3类，其感染沙门氏菌血清型的血清学患病率分别高达10%、10%至50%或超过50%。本研究的目的是评估1类和3类农场育肥单元清洗和消毒在降低或消除污染水平方面的效果。肠杆菌科细菌计数被用作环境中肠道细菌污染的指标，其中可能包括沙门氏菌。从7个1类农场和7个3类农场的猪栏地面、饲料槽和饮水器采集样本，并对每个样本中的肠杆菌科细菌和沙门氏菌进行计数。结果表明，强化清洁和消毒在降低两类猪栏地面上的肠杆菌科细菌水平方面是有效的，但所有农场的饲料槽和饮水器表面仍有残留污染，尤其是3类农场。
