Emission factors for cattle for modelling and reporting
The emission factors below should be used when carrying out ammonia assessments, these factors are subject to change as further information becomes available, only the emission factors on the website at the time of your application will be considered valid.
| Source | Ammonia in kg NH3/AAP |
|---|---|
|
Buildings |
|
|
Dairy cattle housed on slurry |
9.7 |
|
Beef cattle housed on slurry
|
4.6
|
|
Dairy cattle housed on FYM
|
6.5 |
|
Beef cattle housed on FYM
|
3.1 |
|
Dairy and beef calves housed on FYM
|
0.9 |
|
Hard standings (uncovered yards)
|
% TAN |
|
Dairy collecting yards, dairy and beef feeding yards
|
75 |
|
Slurry stores
|
g NH3/m2/d
|
|
Dairy and beef slurry stores (uncrusted)
|
4.2 |
|
Dairy slurry stores (crusted)
|
2.1 |
|
Beef slurry stores (crusted)
|
2.1 |
|
FYM stores |
g NH3/t FYM/yr
|
|
Dairy and beef FYM stores
|
322 |
|
Manure application
|
% TAN |
|
Following application of slurry to land
|
32 |
|
Following application of FYM to land
|
68 |
|
During grazing
|
6 |