| Duration of trimethoprim-sulfamethoxazole use |
P2 (7-wk-old cohort, sampled after 2 wks of AMU) P1 (6-wk-old cohort, sampled after 1 wk of AMU). Metaphylactic treatment with trimethoprim-sulfamethoxazole as medicated fodder, 15–30 mg active substance/1 kg body weight/day, to post-weaning piglets. |
Swine |
Weaners |
2 |
| Duration of trimethoprim-sulfamethoxazole use |
P2 (7-wk-old cohort, sampled after 2 wks of AMU) P1 (6-wk-old cohort, sampled after 1 wk of AMU). Metaphylactic treatment: trimethoprim-sulfamethoxazole as medicated fodder, 15–30 mg active substance/1 kg bw/day, to post-weaning piglets. |
Swine |
Weaners |
7 |
| Duration of trimethoprim-sulfamethoxazole use |
P3 (8-wk-old cohort, sampled after 3 wks of AMU) P1 (6-wk-old cohort, sampled after 1 wk of AMU). Metaphylactic treatment with trimethoprim-sulfamethoxazole as medicated fodder, 15–30 mg active substance/1 kg body weight/day, to post-weaning piglets. |
Swine |
Weaners |
2 |
| Duration of trimethoprim-sulfamethoxazole use |
P3 (8-wk-old cohort, sampled after 3 wks of AMU) P1 (6-wk-old cohort, sampled after 1 wk of AMU). Metaphylactic treatment: trimethoprim-sulfamethoxazole as medicated fodder, 15–30 mg active substance/1 kg bw/day, to post-weaning piglets. |
Swine |
Weaners |
7 |
| Duration of trimethoprim-sulfamethoxazole use |
S2 (Sows 18 weeks after end of treatment, these are 6 month old first parity sows) vs S1 (Sows 10 weeks after end of treatment, these are 4.5 month old gilts). These herds were subjected to the same metaphylactic program when they were post-weaning piglet |
Swine |
Sows |
2 |