Emission factors for poultry for modelling and reporting
The emission factors below should be used for carrying out ammonia assessments and for calculating your emissions for the Emissions Inventory reporting.
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.
Laying hens
|
Housing type |
Ammonia Emission Factor (kg NH3/animal place/year) |
|
Enriched cages with weekly manure removal on belts |
0.048 |
|
Barn, single tier |
0.137 |
|
Barn, multi-tier with belt clean out |
0.073 |
|
Free range, single tier (for emissions inventory reporting) |
0.152 |
|
Free range, single tier (for screening and modelling) |
Indoor portion 0.137; outdoor portion 0.024 |
|
Free range, multi-tier with belt clean out (for emissions inventory reporting) |
0.091 |
|
Free range, multi-tier with belt clean out (for screening and modelling) |
Indoor portion 0.066; outdoor portion 0.024 |
Pullets for egg production
Housing type |
Ammonia Emission Factor (kg NH3/animal place/year) |
|
Litter |
0.043 |
|
Aviary rearing with belt cleaning twice weekly |
0.011 |
|
Aviary rearing with belt cleaning, weekly removal with on-belt drying |
0.006 |
|
Enriched cages with belt cleaning |
0.028 |
Broilers
Housing type |
Ammonia Emission Factor (kg NH3/animal place/year) |
|
Indoors |
0.024 |
|
Free range (emissions inventory reporting) |
0.03 |
|
Free range (screening and modelling) |
indoor portion 0.0216; outdoor portion (0.0084) |
Adult breeders (layers)
|
Housing type |
Ammonia Emission Factor (kg NH3/animal place/year) |
|
Single tier: |
0.133 |
|
Aviary rearing with belt cleaning twice weekly: |
0.033 |
|
Aviary rearing with belt cleaning, weekly removal with on-belt drying: |
0.02 |
Turkeys
|
Gender |
Ammonia Emission Factor (kg NH3/animal place/year) |
|
Male |
0.646 |
|
Female |
0.452 |
Ducks
|
All systems |
0.151 |
Ammonia from poultry manure storage
| Laying hen manure |
2.68 |
|
Other poultry litter |
1.12 |
Dust from poultry
|
Layers, single tier or aviary |
0.1 |
|
Layers, cage |
0.05 |
|
Broilers |
0.1 |
|
Pullets |
0.1 |
|
Turkeys (male) |
0.9 |
|
Turkeys (female) |
0.5 |
Methane emission factors for poultry
Methane emission factor for poultry is 0.078 Kg of methane per animal place per year.