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Report - DCE - Nationalt Center for Miljø og Energi

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4UPSBHF<br />

Livestock manure is collected either as solid manure or as slurry depending<br />

on housing type. In Table 2C.4 is shown the emission factor used <strong>for</strong> storage.<br />

It is assumed that the part of solid manure taken directly from the housing<br />

into the field is 65% from cattle, 25% from pigs, 50% sows, 15% from poultry<br />

and 5% from hens (Poulsen et al., 2011). The remaining part of the solid manure<br />

is deposited in stock piles in the field be<strong>for</strong>e field application.<br />

By law all slurry tanks have to be covered by a crust in order to reduce NH3<br />

emission. However, investigations show that slurry tanks were incompletely<br />

covered earlier (COWI 2000), which result in a higher NH3 emission. In 2010<br />

it is assumed that 5% of the tanks with pig slurry and 2% of tanks with cattle<br />

slurry are incompletely covered. This in<strong>for</strong>mation has been incorporated in<br />

the emission inventory.

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