Escherichia coli O157 in Cull Dairy Cows on Farm and at Slaughter
Source: Journal of Food Protection®, Number 11, November 1997, pp. 1302-1471 , pp. 1386-1387(2)
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.
Document Type: Research Article
Affiliations: 1: Field Disease Investigation Unit, Department of Veterinary Clinical Sciences, Washington State University, Pullman, Washington 99164-6610, USA 2: United States Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, 7261 Franklin Rd., Boise, Idaho 83709, USA 3: Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, Washington 99164-7040, USA 4: United States Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, 530 Center St. NE Suite 335, Salem, Oregon 97301, USA 5: United States Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, 2604 12th Court, SW, Suite B, Olympia, Washington 98502, USA
Publication date: 1997-11-01
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