Table 3.
Five impact categories calculated per kg pig weight at farm gate by the life cycle assessment (LCA) model based on ReCiPe 2016 Midpoint (H) V1.13 method for low residual feed intake (LRFI) and high residual feed intake (HRFI) lines
| Impact category | Unit | Mean HRFI | Mean LRFI | Difference (%) | SD LRFI | SD HRFI | P 1 |
|---|---|---|---|---|---|---|---|
| Climate change | kg CO2 eq | 2.77 | 2.60 | 6.33 | 0.12 | 0.11 | <0.0001 |
| Acidification | g SO2 eq | 48.1 | 44.5 | 7.77 | 2.91 | 2.61 | <0.0001 |
| Eutrophication | g P eq | 3.63 | 3.35 | 8.02 | 0.22 | 0.20 | <0.0001 |
| Land occupation | m2a | 4.45 | 4.19 | 6.01 | 0.19 | 0.18 | <0.0001 |
| Water depletion | m3 | 0.047 | 0.044 | 6.59 | 0.0018 | 0.0017 | <0.0001 |
P = phosphorous; m2a = area time; m3 = cubic meter;
1
P were calculated via a t test on the line effect.