Table 5.
Average environmental impact (range) per unit product of organic systems relative to conventional systems (conventional=100), and number of articles (n)
| Animal species | GWP | n | AP | n | EP | n | Land use | n | Energy use | n | Biodiversity loss | n |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dairy cattle | 100 (83 to 120) | 12 | 109 (87 to 160) | 6 | 103 (64 to 160) | 6 | 149 (108 to 190) | 10 | 71 (60 to 93) | 5 | 54 (24 to 95) | 3 |
| Beef cattle | 86 (68 to 97) | 3 | 164 | 1 | 146 | 1 | 116 (107 to 122) | 2 | 56 | 1 | – | – |
| Pigs | 129 (90 to 172) | 4 | 82 (30 to 130) | 3 | 117 (30 to 130) | 4 | 220 (170 to 311) | 4 | 114 (90 to 140) | 3 | – | – |
| Broilers | 104 (72 to 150) | 5 | 166 (150 to 196) | 3 | 205 (200 to 240) | 4 | 230 (189 to 315) | 4 | 118 (86 to 159) | 4 | – | – |
| Laying hens | 95 (56 to 130) | 4 | 132 (110 to 154) | 3 | 162 (130 to 185) | 2 | 189 (166 to 220) | 2 | 109 (87 to 140) | 3 | – | – |
GWP=global warming potential; AP=acidification potential; EP=eutrophication potential.