Abstract
A cross-sectional survey was conducted on 75 randomly selected dairies in one California county. Salmonella was isolated from 12 (16%) dairies; S newport was isolated from 6 (8%). Chloramphenicol-resistant S newport and S dublin were isolated from 8 (10.7%) dairies. Dairies with Salmonella had higher average calf mortality rates (P = 0.064; odds ratio [OR], 3.8). Dairies with S newport had a greater than expected occurrence of illnesses in adult cows compared with dairies with no S newport (P = 0.048; OR, 6.7) or with no Salmonella serotypes isolated (P = 0.047; OR, 6.9). Dairies with chloramphenicol-resistant Salmonella were more likely to have used chloramphenicol during the preceding 18-month period compared with dairies with chloramphenicol-susceptible Salmonella or no Salmonella (P = 0.023; OR, 9.5).
| Original language | English (US) |
|---|---|
| Pages (from-to) | 59-63 |
| Number of pages | 5 |
| Journal | Journal of the American Veterinary Medical Association |
| Volume | 195 |
| Issue number | 1 |
| State | Published - Jul 1 1989 |
| Externally published | Yes |
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ASJC Scopus subject areas
- veterinary(all)