Evaluation of bacterial and protozoal contamination of commercially available raw meat diets for dogs

Journal of the American Veterinary Medical Association - Tập 228 Số 4 - Trang 537-542 - 2006
Rachel A. Strohmeyer1,2,3,4, Paul S. Morley1,2,3,4, Doreene R. Hyatt1,2,3,4, David A. Dargatz1,2,3,4, Andrea V. Scorza1,2,3,4, Michael R. Lappin1,2,3,4
1Centers for Epidemiology and Animal Health, 2150 Centre Avenue, Bldg B, Fort Collins, CO 80526
2From the Animal Population Health Institute (Strohmeyer, Morley, Hyatt) and the Department of Clinical Sciences (Scorza, Lappin), Colorado State University, Fort Collins, CO 80523;
3USDA, Animal and Plant Health Inspection Service, Veterinary Services,
4Voss Veterinary Medical Center, Colorado State University.

Tóm tắt

Abstract

Objective—To evaluate bacterial and protozoal contamination of commercially available raw meat diets for dogs.

Design—Prospective longitudinal study.

Sample Population—240 samples from 20 raw meat diets for dogs (containing beef, lamb, chicken, or turkey), 24 samples from 2 dry dog foods, and 24 samples from 2 canned dog foods.

Procedure—Each product was purchased commercially on 4 dates approximately 2 months apart. Three samples from each product at each sampling period were evaluated via bacterial culture for non–type-specific Escherichia coli (NTSEC), Salmonella enterica, and Campylobacter spp. Antimicrobial susceptibility testing was performed on selected isolates. Polymerase chain reaction assays were used to detect DNA from Cryptosporidium spp, Neospora spp, and Toxoplasma spp in samples obtained in the third and fourth sampling periods.

Results—One hundred fifty-three of 288 (53%) samples were contaminated with NTSEC. Both raw and prepared foods contained NTSEC during at least 1 culture period. Salmonella enterica was recovered from 17 (5.9%) samples, all of which were raw meat products. Campylobacter spp was not isolated from any samples. In 91 of 288 (31.6%) samples, there was no gram-negative bacterial growth before enrichment and in 48 of 288 (16.7%) samples, there was no aerobic bacterial growth before enrichment. Susceptibility phenotypes were variable. Cryptosporidium spp DNA was detected in 3 samples.

Conclusions and Clinical Relevance—Bacterial contamination is common in commercially available raw meat diets, suggesting that there is a risk of foodborne illness in dogs fed these diets as well possible risk for humans associated with the dogs or their environments.

Từ khóa


Tài liệu tham khảo

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Thông tin xuất bản

Journal of the American Veterinary Medical Association

Tập 228 Số 4

537-542

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