Table 1.
Overview of farm characteristics.
| Farm ID | Maximum Capacity of Broilers on Farm | Average Number of Broilers per Study House | Housing System |
Use of Standard Treatment Protocol 1 | Source Standard Treatment Protocol |
|---|---|---|---|---|---|
| 1 | 11,000 | 6000 | Open | Yes | Integration |
| 2 | 12,000 | 5125 | Open | Yes | Integration |
| 3 | 16,000 | 7250 | Closed | No | No protocol |
| 4 | 13,500 | 6750 | Semi-closed | No | No protocol |
| 5 | 50,000 | 13,900 | Closed | Yes | Pharmaceutical company |
| 6 | 80,000 | 20,000 | Semi-closed | No | No protocol |
| 7 | 14,000 | 4625 | Open | No | No protocol |
| 8 | 21,000 | 4000 | Open | No | No protocol |
| 9 | 70,000 | 5100 | Semi-closed | No | No protocol |
| 10 | 40,000 | 1766 | Open | Yes | Owner |
| 11 | 33,000 | 18,631 | Semi-closed | Yes | Owner |
| 12 | 28,000 | 7750 | Semi-closed | No | No protocol |
| 13 | 65,000 | 18,900 | Semi-closed | No | No protocol |
| 14 | 50,000 | 24,250 | Semi-closed | No | No protocol |
| 15 | 14,000 | 4369 | Open | Yes | Pharmaceutical company |
| 16 | 6500 | 4400 | Open | No | No protocol |
| 17 | 4800 | 3825 | Open | No | No protocol |
| 18 | 40,000 | 7925 | Semi-closed | No | No protocol |
| 19 | 35,000 | 13,050 | Semi-closed | No | No protocol |
1 A standard treatment protocol is a predefined plan outlining which treatments should be administered on specific days of the production cycle. In this study, the standard treatment protocol was either provided by an integration (referring to a larger company that the farm is a part of, which oversees and coordinates various aspects of the farm’s operations) or a pharmaceutical company or developed by the farm owner.