Ammonia - pig housing

Housing type

Ammonia Emission Factor (kg NH3/animal place/year)

Sows  
Fully slatted floor (FSF) 3.01
Solid floor straw system 4.57
Part slatted floor (PSF) with reduced manure pit 2.41
FSF with vacuum system for frequent slurry removal 2.26
Farrowers  
Fully slatted floor (FSF) 5.84
Solid floor straw system 8.88
FSF/PSF with combination of water and manure channel 2.80
FSF/PSF with flushing system with manure gutters 2.34
FSF/PSF with manure pan underneath 2.04
Weaners  
Fully slatted floor (FSF) 0.29
Solid floor straw system 0.21
Pen/ Flatdeck with FSF/PSF with vacuum system for frequent slurry removal 0.22
Pen/ Flatdeck with FSF beneath where there is concrete sloped floor to separate faeces or urine 0.20
Pen with PSF (2 climate system) 0.19
Pen with PSF and sloped or convex solid floor 0.17
Pen with PSF with triangular slats and manure channel with sloped side walls 0.08
Growers  
Fully slatted floor (FSF) 1.59
Solid floor straw system 1.14
FSF with vacuum system for frequent slurry removal 1.19
PSF with reduced manure pit including slanted walls and vacuum system 0.64
PSF with central convex solid floor at front and manure gutters with slanted sidewalls and sloped manure pit 0.64
Finishers  
Fully slatted floor (FSF) 4.14
Solid floor straw system 2.97
FSF with vacuum system for frequent slurry removal 3.11
PSF with reduced manure pit including slanted walls and vacuum system 1.66
PSF with central convex solid floor at front and manure gutters with slanted sidewalls and sloped manure pit 1.66

Ammonia - pig manure and slurry storage

Manure storage

Kg NH3 / tonne fresh manure

Manure heap 1.49
Slurry storage Kg NH3 / m2
Circular store no cover 1.4
Circular store rigid cover 0.28
Circular store floating cover 0.7
Circular store low tech cover 1.05
Lagoon no cover 1.4
Lagoon rigid cover 0.28
Lagoon floating cover 0.56
Lagoon low tech cover 0.84

Methane emission factors

Description

Enteric fermentation (kg CH4/animal place/year)

Manure management (kg CH4/animal place/year)

Pigs 1.5 3