Report - DCE - Nationalt Center for Miljø og Energi

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5JNF TFSJFT
The NH3 emission from manure management is estimated to 60.64 Gg NH3
in 2010 (table 6.6). From 1985 to 2010, the emission is reduced by 35 %. As
mentioned in section 6.1.1 this development is mainly due to an active environmental
policy to reduce nitrogen losses from the agricultural production.
The number of cattle has decreased as a result of a growth in milk yield. In
2010, cattle production contributes with 34 % of the total emission from manure
management. The pig production contributes in 2010 with 44 % of the
total emission from manure management. The production of fattening pigs
has increased by more than 50 % compared with 1985. However, despite this
development the emission from pigs is still decreasing. This is due to measures
focused on the biological development and improvement in fodder efficiency.
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Figure 6.5 shows the percentage distribution of the NH3 emission in housings,
storage and spreading of manure in fields. The main part of the reduction
in NH3 emission has taken place in connection with the spreading of
manure in fields, due to changes in manure application practice. There has
been a reduction in emissions in relation to storage as a result of improved
covering of slurry tanks. From 1985 to 2010, the emission relating to manure
management in housings increased from 38 % to 56 %. In future, the possibilities
for NH3 reduction will be likely to be focused on measurements in
housings.