Table 6.
Potential environmental impacts of control feedsa (1 kg at feed mill gate, formulated without β-mannanase) for growing-finishing pigs in different grain production scenarios.
| Growing | Finishing | |||
|---|---|---|---|---|
| I | II | I | II | |
| SO-SO scenario b | ||||
| Climate change, g CO2-eq | 633 | 614 | 596 | 577 |
| Eutrophication, g PO4-eq | 4.33 | 4.25 | 4.15 | 4.03 |
| Acidification, g SO2-eq | 7.81 | 8.18 | 8.55 | 8.95 |
| CW-SO scenario c | ||||
| Climate change, g CO2-eq | 768 | 728 | 686 | 639 |
| Eutrophication, g PO4-eq | 4.29 | 4.21 | 4.12 | 4.01 |
| Acidification, g SO2-eq | 8.47 | 8.73 | 8.99 | 9.25 |
| CW-CW scenario d | ||||
| Climate change, g CO2-eq | 844 | 809 | 773 | 732 |
| Eutrophication, g PO4-eq | 4.36 | 4.28 | 4.20 | 4.10 |
| Acidification, g SO2-eq | 7.74 | 7.95 | 8.15 | 8.36 |
a
Growing I, growing II, finishing I, and finishing II feeds were formulated based on animals 70–84, 91–105, 112–133, and 140–161 days of age, respectively, with 40, 60, 85, and 112.5 kg of body weight on average, respectively.
b
SO-SO scenario: Soybean and corn produced in Southern Brazil.
c
CW-SO scenario: Soybean produced in Central-West Brazil and corn produced in Southern Brazil.
d
CW-CW scenario: Soybean and corn produced in Central-West Brazil.