Table 1.
Summary of explanatory variables associated with postweaning mortality as identified in retrospective analysis of commercial production records
| Weight, kg | ||||||
|---|---|---|---|---|---|---|
| Article | Country | Year | Number of pigs | Start | End | Significant factors (P ≤ 0.05) |
| Losinger et al. (1998) | USA | 1995–1996 | N/A | N/A | N/A | Weaning age |
| Source | ||||||
| Maes et al. (2001) | USA | 1996–2000 | 1,345,127 | N/A | N/A | Year |
| Timing within finishing | ||||||
| Maes et al. (2004) | Belgium | 1999–2002 | 828,385 | 25 | 113 | Season |
| Source | ||||||
| Feeding duration | ||||||
| Larriestra et al. (2005a) | USA | 1996–2000 | 1,720,040 | 23 | N/A | Entry weight |
| Days on feed | ||||||
| Season | ||||||
| Oliveira et al. (2007) | Spain | 1996–1997 | 120,751 | 18–20 | N/A | Farm type |
| Herd size | ||||||
| Season | ||||||
| Feeding duration | ||||||
| Oliveira et al. (2009) | Spain | 1999–2002 | 158 batches | N/A | N/A | Quality of care |
| Source | ||||||
| Season | ||||||
| Year | ||||||
| Agostini et al. (2013) | Spain | 2008–2010 | 1,157,212 | 19 | 108 | Season |
| Number of pigs placed | ||||||
| Number of sources | ||||||
| Circovirus vaccine | ||||||
| Antibiotic route | ||||||
| Water source | ||||||
| Serrano et al. (2014) | Spain | 2003–2005 | 42 farms | N/A | N/A | Presence of viral antibodies |
| Farm type | ||||||
| Agostini et al. (2014) | Spain | 2008–2009 | 454,855 | 20 | 104 | Season |
| Number of sources | ||||||
| Ventilation type | ||||||
| Initial bodyweight (IBW) | ||||||
| IBW × ventilation type | ||||||
| IBW × number of sources | ||||||
| Agostini et al. (2015) | Spain | 2008–2010 | 1,040,116 | 19 | 106 | Season |
| Number of sources | ||||||
| Ventilation type | ||||||
| Number of pigs placed | ||||||
| Mehling et al. (2019) | USA | 2015 | 115,213 | 7 | 115 | Stocking density |
N/A = information not provided.