| Housing type |
Ammonia Emission Factor (kg NH3/animal place/year) |
| Layers |
|
| Cage with deep pit manure storage beneath |
0.29 |
| Ventilated deep pit |
0.20 |
| Manure removal twice a week by manure belt |
0.035 |
| Vertical tiered cages with forced air drying once a week removal |
0.035 |
| Vertical tiered cages with whisk forced air drying once a week removal |
0.09 |
| Vertical tiered cages with manure belt with drying tunnel over cage 24-36 hour removal |
0.035 |
| Barn and free range |
|
| Perchery with deep litter |
0.29 |
| Litter system with forced air drying |
0.12 |
| Litter system with perforated floor and forced air drying |
0.10 |
| Aviary system |
0.08 |
| Broilers |
|
| Naturally ventilated, fully littered floor, non-leaking drinkers |
0.034 |
| Fan ventilated, fully littered floor, non-leaking drinkers |
0.034 |
| Pullets |
|
| Naturally ventilated, fully littered floor, non-leaking drinkers |
0.06 |
| Fan ventilated, fully littered floor, non-leaking drinkers |
0.06 |
| Turkeys |
|
| Male |
0.45 |
| Female |
0.23 |
| Ducks |
0.11 |
