| Title | Description | Host | Host Type | Outcomes |
|---|---|---|---|---|
| Sulfamethoxazole/Trimethoprim use as growth promoters | Growth promoter birds age 11 months (Group D). Control birds age 18 months, no antimicrobial growth promoter use (Group F). | Chicken | Layers | 6 |
| Tetracycline use as growth promoter | Growth promoter birds age 20 months (Group A). Control birds age 18 months, no antimicrobial growth promoter use (Group F). | Chicken | Layers | 6 |
| Tetracycline, Erythromycin and Streptomycin use as growth promoters | Growth promoter birds age 4 months (Group C) Control birds age 18 months, no antimicrobial growth promoter use (Group F). | Chicken | Layers | 6 |