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Emissions d’ammoniac et de gaz à effet de serre associées à l’hébergement de porcs charcutiers et de truies gestantes sur caillebotis et sur litière paillée
| Content Provider | Semantic Scholar |
|---|---|
| Author | Philippe, François-Xavier |
| Copyright Year | 2013 |
| Abstract | Pig houses are important sources of ammonia (NH3) emissions. For decades, investigations were carried out in determine the influencing factors and to point out opportunities of mitigation. In Europe, current NH3 emissions associated to pig production are about 24% lower than in 1990. However, further reduction seems necessary to avoid noxious effects on ecosystems. The main factors influencing NH3 production are the floor type, the manure removal system, the climatic conditions inside the building, the diet composition and the feed efficiency of animals. In pig production, the main floor types are the slatted floor and the bedded floor systems. In both systems, numerous variants and adaptations can be found with consequently a range of emission levels for each housing condition. Therefore, decision in favour of a floor type as regards NH3 emissions is difficult, especially as effective reducing strategies are available for both systems. For litter-based systems, the nature and the amount of substrate greatly influence the NH3 production with usually lower emission in case of generous bedding. For slatted floor systems, most of the studies resulted in lower emissions with partly slatted floor on condition that the solid part of the floor remains clean. Indeed, hot conditions, high animal density or inadequate pen design can increase the soiling of the solid floor and lead to increased NH3 emissions. In any case, emissions are lower if concrete slats are replaced by smooth materials like iron cast, metal or plastic slats. Several slurry pit designs and manure removal strategies were developed to mitigate emissions. The reduction of the slurry pit surface thanks to sloped pit walls are related |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://orbi.uliege.be/bitstream/2268/159085/1/FxPhilippe_Thesis.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
