Loneragan G H, Brashears M M
Division of Agriculture, Killgore Research Building, West Texas A&M University, WTAMU Box 60998, Canyon, TX 79016-0001, USA.
Meat Sci. 2005 Sep;71(1):72-8. doi: 10.1016/j.meatsci.2005.04.005. Epub 2005 Jun 28.
Escherichia coli O157 is an important cause of food-borne illness. The primary reservoir for this organism is cattle and at present the major site of control is within abattoirs. Recent data have highlighted the importance of the pathogen load entering abattoirs on harvest-ready feedlot cattle. The likelihood for in-plant intervention failure increases as the proportion of cattle carrying E. coli O157 within a pen increases. Pre-harvest reduction of E. coli O157 colonization will require targeted intervention strategies and should reduce contamination of carcasses thereby enhancing public health. Several pre-harvest interventions show substantial promise, such as specific strains of direct-fed microbials, vaccine technology, sodium chlorate, and neomycin sulfate, whereas others such as Brown Seaweed or chlorination of water have little or no detectable benefit. Selection of validated interventions strategies will be important as efforts to control pre-harvest carriage of E. coli O157 increase.
大肠杆菌O157是食源性疾病的一个重要病因。这种细菌的主要宿主是牛，目前主要的控制场所是屠宰场。最近的数据凸显了进入屠宰场的育肥牛身上病原体负荷的重要性。随着围栏内携带大肠杆菌O157的牛的比例增加，厂内干预失败的可能性也会增加。收获前减少大肠杆菌O157的定植需要有针对性的干预策略，并且应该减少胴体的污染，从而增进公众健康。几种收获前干预措施显示出很大的前景，比如特定菌株的直接投喂微生物、疫苗技术、氯酸钠和硫酸新霉素，而其他一些措施，如褐藻或水的氯化处理，几乎没有或没有可检测到的益处。随着控制收获前大肠杆菌O157携带情况的努力增加，选择经过验证的干预策略将很重要。
