农场和屠宰场的屠宰奶牛体内的大肠杆菌O157

Escherichia coli O157 in Cull Dairy Cows on Farm and at Slaughter.

作者信息

Rice Daniel H, Ebel Eric D, Hancock Dale D, Besser Thomas E, Herriott Donald E, Carpenter Linda V

机构信息

Field Disease Investigation Unit, Department of Veterinary Clinical Sciences, Washington State University, Pullman, Washington 99164-6610; United States Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services.

7261 Franklin Rd., Boise, Idaho 83709.

出版信息

J Food Prot. 1997 Nov;60(11):1386-1387. doi: 10.4315/0362-028X-60.11.1386.

DOI:10.4315/0362-028X-60.11.1386

PMID:31207787

Abstract

Cull dairy cattle both on the farm and at slaughter from herds in the states of Idaho, Oregon, and Washington were surveyed for Escherichia coli O157 by culturing fecal swab samples. A total of 205 cull cows from 19 dairy herds were sampled on the farm of origin; 7 (3.4%) tested positive for E. coli O157. A total of 103 cull cows from 15 dairy herds were sampled at slaughter; 4 (3.9%) were positive for E. coli O157. Eighty-nine cull cows were sampled both at the farm and at slaughter; 2 (2.2%) were positive in both locations, 3 (3.3%) only on the farm, and 2 (2.2%) only at the slaughter plant. Seven (7.9%) of the 89 cull cows tracked from farm to slaughter were positive in at least one location. This suggests a higher prevalence of E. coli O157 in cull dairy cattle than previously has been reported to occur in other ages and classes of cattle.

摘要

对爱达荷州、俄勒冈州和华盛顿州奶牛场淘汰奶牛以及屠宰场的淘汰奶牛进行了调查，通过培养粪便拭子样本检测其中的大肠杆菌O157。在19个奶牛场的205头淘汰奶牛的原养殖场采集了样本；7头（3.4%）检测出大肠杆菌O157呈阳性。在15个奶牛场的103头淘汰奶牛屠宰时采集了样本；4头（3.9%）大肠杆菌O157呈阳性。89头淘汰奶牛在养殖场和屠宰场都进行了采样；2头（2.2%）在两个地点检测均呈阳性，3头（3.3%）仅在养殖场呈阳性，2头（2.2%）仅在屠宰场呈阳性。在从养殖场追踪到屠宰场的89头淘汰奶牛中，7头（7.9%）至少在一个地点呈阳性。这表明淘汰奶牛中大肠杆菌O157的患病率高于此前报道的其他年龄和种类的牛。