Livestock housing systems – environmental technologies

See a list of environmental technologies with a proven effect within livestock housing systems for agricultures.

In the table beneath all of the technologies with a proven effect occurs within livestock housing systems and what category of livestock the technology is meant for. You can also see what effect the technology have alongside with the documentation for the effect. Lastly, you can see when the technology was admitted to the List of Environmental Technologies.

List of environmental technologies with a proven effect within livestock housing systems for agricultures.
 Technology  Livestock Category  Environmental Impact  Documentation  Remarks
 Intellifarm by Agrifarm  Slaughtering pigs  Ammonia: 67 % in combination with Agri Airclean aircleaner.
When using another air cleaner the ammonia effect can be calculated: Overall effect = 0,86 × E − 11.
Odour: 53 % in combination with Agri Airclean aircleaner.
When using another air cleaner the odour effect can be calculated: Overall effect = 0,53 × E + 9.		  MELT Expert Recommendation  Admitted to List of Environmental Technologies in 2019.
 Cooling of manure (flush tube barns)  Pigs  Ammonia: Up to 30 %. The reduction is calculated on the basis of the formula: 0,85*x-0,004x2 (x=W/m2).
Odour: Up to 20 %. The reduction is calculated on the basis of the formula: 0,77*x.		  MELT Expert Recommendation  Admitted to List of Environmental Technologies in 2018.
 Cooling of manure (wire-type barn cleaner)  Pigs  Ammonia: Up to 34 %. The reduction is calculated on the basis of the formula: 1,66*x-0,02*x2).
No reduction of odour emissions.		  MELT Expert Recommendation  Admitted to List of Environmental Technologies in 2018.

 JH Acidification NH4+

INFARM NH4+

  Pigs  64 % reduction of ammonia emissions.
No reduction of odour emissions.		  MELT Expert Recommendation.
VERA Verification Statement for JH Forsuring NH4+.
MELT recommendation for INFARM NH4+.		  Admitted to List of Environmental Technologies in 2012.
Revised in 2014.
Revised in 2020. Infarm NH4+ added.
This technique can on special terms substitute natural surface crust.

 JH Smellfighter.

In combination with JH Acidification.

  Pigs  51 % odour reduction.
Same reduction of ammonia emissions as JH acidification in pig barns.		  MELT Expert recommendation  Admitted to List of Environmental Technologies in 2018.
 JH Acidification NH4+  Cattle  33 % reduction of ammonia emissions.
No reduction of odour emissions.		  MELT Expert Recommendation.
Dokumentation report (Danish).		  This technique can on special terms substitute natural surface crust.
Finally admitted to List of Environmental Technologies in 2022.
Before that temporarily admitted to List of Environmental Technologies with effect of 50 % reduction of ammonia emissions. Temporarily documentation of the technology by the Danish Environmental Protection Agency.
 Daily removal of slurry in mink cages  Mink  27 % reduction of ammonia emissions.
No reduction of odour emissions.		  MELT Expert Recommendation.
VERA Verification Statement for daily removal of slurry in livestock housing systems for minks.		  Admitted to List of Environmental Technologies in 2013.
Remarks on daily removal of slurry.
 Removal of slurry in mink cages twice a week  Mink  27 % reduction of ammonia emissions.
No reduction of odour emissions.		  MELT Expert Recommendation.
VERA Verification Statement for removal of slurry twice a week in livestock housing systems for minks.		  Admitted to List of Environmental Technologies in 2013.
Remarks on removal of slurry at frequent intervals.
 Removal of slurry in livestock housing systems for fattening pigs weekly (flush tube barns)  Fattening pigs i  No reduction of ammonia emissions.
20 % reduction of odour emissions.		  MELT Expert Recommendation  Admitted to List of Environmental Technologies in 2015.
 Manure belt for laying hens in barns  Laying hens  30-36 % ammonia reduction at respectively two and three weekly removals of manure.
No reduction of odour emissions.		  Documentation of the technology by the Danish Environmental Protection Agency  Temporarily admitted to List of Environmental Technologies by special agreement with the Danish Environmental Protection Agency.
 Manure belt for laying hens in cages  Laying hens  54-66 % ammonia reduction at respectively two and three weekly removals of manure.  No reduction of odour emissions  Documentation of the technology by the Danish Environmental Protection Agency Temporarily admitted to List of Environmental Technologies by special agreement with the Danish Environmental Protection Agency.
 Point exhaust ventilation in livestock housing systems for fattening pigs  Pigs  Reduction of ammonia emissions depend on the efficiency of the air cleaner attached. The reduction is calculated on the basis of the formula: Overall effect = 0.7 × E – 12.
Reduction of odour emissions depend on the efficiency of the air cleaner attached. The reduction is calculated on the basis of the formula: Overall effect = 0.39 × E + 9.		  MELT Expert Recommendation  Admitted to List of Environmental Technologies in 2014.

 Rokkedahl Energi

Heatexchanger for Poultry houses

  Poultry  30 % ammonia reduction.
No reduction of odour emissions.		  MELT Expert Recommendation  Admitted to List of Environmental Technologies in 201