Table 3 Cold carcass weight (mean ± SD, kg) and number and percentage of pigs with presence of pleurisy, enzootic pneumonia (EP) like lesions and pericarditis at slaughter for four main cohorts of pigs retrospectively identified according to the time they spent in each of the production stages in a study investigating management approaches for body weight variation in a farrow-to-finish pig commercial farm and their possible implications for animal health
Cohorta | Sub-cohortb | Description | n | Cold carcass weight, kg | Pleurisy | EP | Pericarditis | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Mean | SD | n | % | n | % | n | % | ||||
1 | – | Pigs born one week later and weaned at 21 d of age | 48 | NAc | NA | NA | NA | NA | NA | NA | NA |
2 | 2a | Pigs weaned at 28 d of age. Splitd by size 3 weeks post-weaning from group a group of 888 pigs | 265 | 92.6 | 8.96 | 52 | 19.6 | 103 | 38.9 | 11 | 4.2 |
2 | 2b | Pigs weaned at 28 d of age. Splitd by size 3 weeks post-weaning from sub-cohort 2a and 5 weeks post-weaning from sub-cohort 2c | 357 | 88.8 | 8.71 | 66 | 18.5 | 158 | 44.3 | 26 | 7.3 |
2 | 2c | Pigs weaned at 28 d of age. Smaller size pigs splitd by size 5 weeks post-weaning from sub-cohort 2b | 87 | 86.6 | 9.36 | 21 | 24.1 | 36 | 41.4 | 10 | 11.5 |
3 | – | Pigs weaned at 35 d of age | 25 | 83.6 | 11.20 | 5 | 20.0 | 15 | 60.0 | 7 | 28.0 |
4 | – | Pigs weaned at 49 d of age plus delayed pigs from the other cohorts and pigs that had returned from the hospital facilities | 94 | 78.1 | 11.41 | 40 | 42.6 | 43 | 45.7 | 22 | 23.4 |