Table 2 The distribution of 5494 remaining pigs across treatment groups and the outcomes umbilical outpouching (UO) or dead
Treatment group N (%)a | N(%) | ||||
|---|---|---|---|---|---|
Control | Antibiotic | Experimental | Total | ||
Distribution across groups | Total | 1791 (32.6) | 1862 (33.9) | 1841 (33.5) | 5494 (100) |
Dead before clinical examination | Total | 381 (21.3) | 365 (19.6) | 370 (20.1) | 1116 (20.3) |
Dead with UO | Yes | 9 (2.4) | 12 (3.3) | 7 (1.9) | 28 (2.5) |
No | 372 (97.6) | 353 (96.7) | 363 (98.1) | 1088 97.5) | |
Examined 6 weeks after weaning | Total | 1410 (78.7) | 1497 (80.4) | 1471 (79.9) | 4378 (79.7) |
UO 6 weeks after weaning | Yes | 58 (4.1) | 65 (4.3) | 65 (4.4) | 188 (4.3) |
No | 1352 (95.9) | 1432 (95.7) | 1406 (95.6) | 4190 (95.7) | |
Dead in nursery unit after clinical examination | Total | 30 (1.7) | 26 (1.4) | 24 (1.3) | 80 (1.5) |
Dead with UO after clinical examination | Yes | 20 (66.6) | 18 (69.2) | 17 (70.8) | 55 (68.8) |
No | 10 (33.3) | 8 (30.8) | 7 (29.2) | 25 (31.2) | |
Overall UO prevalenceb | 69 (3.9) | 78 (4.2) | 74 (4.0) | 221 (4.0) | |
Overall mortalityc | 411 (22.9) | 391 (21) | 394 (21.4) | 1196 (21.8) | |