Abstract
The aim of this study was to determine the level and variations in ammonia emissions from buildings and outside yards, with different manure removal systems, for organically raised fattening pigs. Ammonia emissions were determined at three farms with organically raised pigs. Amongst other differences, farms mainly differed in manure removal system at the outside yard. Measurements were carried out during two measuring seasons, with two categories of pigs: fatteners of 45 and 80 kg. Excreting behaviour was analysed by video observations and ammonia emission was measured by the ventilated chamber technique. There were clear differences in ammonia emission between farms (probability, P
Original language | English |
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Pages (from-to) | 412-422 |
Journal | Biosystems Engineering |
Volume | 99 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2008 |
Keywords
- organic farming
- pig farming
- pig manure
- meat animals
- ammonia emission
- outdoor run
- air quality
- partially slatted floors
- livestock buildings
- gaseous emissions
- manure stores
- volatilization
- model
- reduction
- yards