Table 2.
Prevalence of Salmonella in the intestinal content of free-range pigs. Data are presented by farms, serovars and antimicrobial resistance (AR) profiles of the isolates found.
| Farm Code | No. (%) Samples Positive/Total | Serovars (No. of Strains) | AR Profiles 1 (No. of Strains) |
|---|---|---|---|
| 1 | 13/15 (86.7%) | 4,5,12:i:- (13) | SSu (5); ASSuT (4); ASSu (2); ACSSuT (2) |
| 2 | 8/15 (53.3) | 4,5,12:i:- (8) | ACS (3); CS (2); ACSSu (1); AS (1); ACSSuT (1) |
| 3 | 7/15 (46.7%) | 4,5,12:i:- (7) | SSu (4); ASSuT (3) |
| 4 | 7/15 (46.7%) | 4,5,12:i:- (7) | ASSu (4); ASSuT (2); SSu (1) |
| 5 | 6/15 (40%) | 4,5,12:i:- (5); diarizonae (1) |
ASSuT (3); SSu (1); A (1) Susceptible (1) |
| 6 | 5/15 (33.3%) | Bovismorbificans (4); Altona (1) |
ACSSuT (2); CSSuT (2); S (1) |
| 7 | 4/15 (26.7%) | Bovismorbificans (2); Meleagridis (2); |
CSSuT (2); Susceptible (2) |
| 8 | 4/15 (26.7%) | 4,5,12:i:- (2); Amsterdam (1); Altona (1) |
ASSuT (2); Susceptible (2) |
| 9 | 3/15 (20%) | 4,5,12:i:- (3) | ASSu (2); Susceptible (1) |
| 10 | 1/15 (6.7%) | 4,5,12:i:- (1) | ASSuT (1) |
| 11 | 0/15 (0%) | N.A. | N.A. |
| 12 | 0/15 (0%) | N.A. | N.A. |
| Total | 58/180 (32.2%) | 6 serovars (58) | 11 AR profiles |
1 A: ampicillin; C: chloramphenicol; S: streptomycin; Su: sulfisoxazole and/or trimetoprim–sulfometoxazole; T: tetracycline; N.A.: not applicable.