Shelton, N. W.; Jacob, M. E.; Tokach, Michael D.; DeRouchey, Joel M.; Amachawadi, R. G.; Shi, X.; Nagaraja, Tiruvoor G.; Nelssen, Jim L.; Goodband, Robert D.; Dritz, Steven S. (United States of America)
Other (2009)
A total of 180 weanling pigs (PIC TR4 A-1050, initially 11.1 lb and 21 d of age) were used in a 42-d growth trial. Pigs were allotted to pens by initial BW, and pens were assigned to treatments in a random-ized complete block design with both weight and location in the nursery serving as blocking factors. There were 6 pens per treatment with 5 pigs per pen. Treatments were arranged as a 2 A- 2 factorial design with main effects of added copper from CuSO4 (0 or 125 ppm) and added zinc from ZnO (0 or 3,000 ppm from d 0 to 14 and 0 or 2,000 ppm from d 14 to 42) along with an additional treatment with an in-feed antibiotic that providing neomycin (50 g/ton) and oxytetracycline (50 g/ton). The trace mineral premix supplied a base level of 165 ppm zinc and 16.5 ppm copper in all diets. The diets were fed in 2 phases: Phase 1 from d 0 to 14 and Phase 2 from d 14 to 42. Treatment diets were prepared by replacing cornstarch with ZnO, CuSO4, or in-feed antibiotic.
On d 14 and 42, fecal samples were collected from 3 randomly selected pigs per pen.
AST Method: None
Reference explicitly reports AST breakpoints: True
Reference reports using a MIC table: False
Is Excluded: False
| Country | Sub-Region | Sub-Region Detail |
|---|---|---|
| United States of America | Kansas (State) | Manhattan |
| ID | Note | Resolution |
|---|
| Title | Host | Host | Production Stage | Description | ROs |
|---|---|---|---|---|---|
| Copper and zinc use | Swine | Weaners | None | Phase 2 diet (day 14 - 42): basal diet with 125 ppm of added Cu from CuSO4 and 2,000 ppm from d14-28 added Zn from ZnO) instead of cornstarch. | 1 |
| Copper and zinc use | Swine | Weaners | Farm | Phase 2 diet (day 14 - 42): basal diet with 125 ppm of added Cu from CuSO4 and 2,000 ppm from d14-28 added Zn from ZnO) instead of cornstarch. | 3 |
| Copper use | Swine | Weaners | Farm | Phase 2 diet (day 14-42): basal diet with copper from CuSO4 (125 ppm) instead of cornstarch. | 4 |
| Neomycin and oxytetracycline use | Swine | Weaners | Farm | Phase 2 diet (day 14-42): basal diet with in-feed antibiotic that providing neomycin (50 g/ton) and oxytetracycline (50 g/ton) instead of cornstarch. | 4 |
| Zinc use | Swine | Weaners | Farm | Phase 2 diet (day 14-42): basal diet with 2,000ppm added Zn from ZnO from d14-28 instead of cornstarch. | 4 |