Ammonia emissions from pig houses: Influencing factors and mitigation techniques

Floor slat openings impact ammonia and greenhouse gas emissions associated with group-housed gestating sows

“…NH 3 emission was 19% lower with the solid floor of which 15% was reserved for drainage openings (12.77 v. 15.83 g/ day per sow). These figures are close to the values reported in the review of the literature by Philippe et al (2011a) which presented emissions ranging from 8.3 to 12.8 g/day per sow. It is usually assumed that NH 3 -emissions are lower with a partly slatted floor in comparison with a fully slatted floor on the condition that the emitting manure surface in the pit is reduced and the solid part of the floor is kept clean (Philippe et al, 2011a).…”

“…These figures are close to the values reported in the review of the literature by Philippe et al (2011a) which presented emissions ranging from 8.3 to 12.8 g/day per sow. It is usually assumed that NH 3 -emissions are lower with a partly slatted floor in comparison with a fully slatted floor on the condition that the emitting manure surface in the pit is reduced and the solid part of the floor is kept clean (Philippe et al, 2011a). Indeed with a partly-slatted floor, the fouling of the solid floor can be important, especially in case of summer conditions and high animal density (European Commission, 2003;Aarnink et al, 2006).…”

“…These rules concerning the floor characteristics were determined according to the welfare requirements of sows. However, flooring arrangements also have environmental impacts with some influences on ammonia and greenhouse gas emissions (Philippe et al, 2011a;. Drainage openings on the solid floor must limit the fouling of the floor with deposits of urine and faeces which, if they occur, contribute to increase gaseous emissions particularly ammonia (NH 3 ) but maybe also methane (CH 4 ) and nitrous oxide (N 2 O) emissions NH 3 -emissions have to be minimized because they contribute to soil and water acidification, to water eutrophication and to indirect N 2 O-emissions (IPCC, 2006).…”

Regional Modeling of Aerosol Chemical Composition at the Puy de Dôme (France)

“…Ils sont principalement émis dans l'atmosphère sous forme de NO mais vont rapidement se convertir en NO 2 et contribuer au cycle catalytique de formation de l'ozone troposphérique (O 3 ). Delmas et al (1997) (Yienger and Levy, 1995 La principale source d'ammoniac (NH 3 ) au niveau global provient de l'hydrolyse de l'urée produite par les animaux (Galloway et al, 2004;Philippe et al, 2011;Sutton et al, 2008). Bouwman et al (1997) 6(%-'!-!…”

Ammonia concentration in farrowing pens with permanent limited range of motion for lactating sows

“…By 2050, the global emissions of NH 3 are expected to double, principally owing to the demographic growth, changes in food preferences and the agricultural intensifi cation (Clarisse et al 2009). Th e main factors infl uencing NH 3 production are the fl oor type, the manure removal system (Mihina et al 2011), the climatic conditions inside S10 the building, diet composition, and feed effi ciency of animals (Philippe et al 2011a). Ammonia emissions are clearly correlated with the behaviour, ambient temperature, animal density (Guingand et al 2010), ventilation system (Topisirovic et al 2010a, b), and fl oor system (Philippe et al 2006(Philippe et al , 2010(Philippe et al , 2011bCabaraux et al 2009).…”