Lower emissions when pig manure is removed more often
Vincent ter Beek, Pig Progress
Nov 4, 2019
“Do remove pig manure regularly as well as completely – and preferably remove the urine separately.” That, in short is the recommendation given by researchers of Wageningen University & Research in the Netherlands.
Commissioned by the Netherlands Ministry of Agriculture, Nature and Food Quality, the researchers investigated which measures could be taken by pork producers to reduce emissions integrally and at the source. Removing manure to a closed storage space can reduce the pig house emissions considerably, they found. The report, called ‘Measures at the source to reduce emissions from existing pig houses’ was published only in Dutch.
Especially the combination of measures could lead to a considerable reduction of several types of emissions at the source. Included are emissions of both ammonia, odour as well as dust particles.
Examples of successful approaches
A good example in that context is the often and complete removal of manure using manure pits, manure gutters or manure shoves in combination with clean floors as well as a specific dust reduction measure.
One other example would be to readmit the thin fraction to the manure pit after having been exposed to air, in combination with clean floors and a specific dust reduction measure. This fraction will no longer generate any ammonia and odour emissions and will therefore also reduce that type of emissions from fresh manure.
Thirdly, the cooling of manure would also be a good measure to reduce emissions, the researchers wrote. At the moment, the cooling of the manure surface until about 15ºC is already being applied in practice these days. The researchers, however, launched a plea for a further reduction of that temperature – for all types of manure. To create a completely sustainable system using manure cooling, the removed heat could be used for the use of the piglet houses or adjacent living quarters.
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