Influence of season,ventilation strategy,and slurry removal on methane emissions from pig houses |
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| Affiliation: | 1. Hohenheim University, Institute of Agricultural Engineering, Garbenstraße 9, 70593 Stuttgart, Germany;2. Christian-Albrechts-University, Kiel Institute of Agricultural Engineering, Max-Eyth-Strasse 6, 24118 Kiel, Germany;1. INRA, UMR1348 PEGASE, 35590 Saint-Gilles, France;2. INRA, UMR1069 Soil Agro and hydroSystem, 35000 Rennes, France;3. Agrocampus Ouest, F-35000 Rennes, France;4. Ajinomoto Eurolysine SAS, 153 rue de Courcelles, 75817 Paris, France;1. Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada;2. Agriculture and Agri-Food Canada, Agassiz, British Columbia, Canada;3. Carleton University, Ottawa, Ontario, Canada;4. University of Bamenda, Cameroon;5. University of Guelph, Guelph, Ontario, Canada;6. Environment Canada, Gatineau, Quebec, Canada;1. University of Graz, Institute of Systems Sciences, Innovation and Sustainability Research, Merangasse 18, 8010 Graz, Austria;2. International Institute for Applied Systems Analysis, Schlossplatz 1, 2361 Laxenburg, Austria;1. Department of Biosystems Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium;2. ILVO, Institute for Agricultural and Fisheries Research, Technology and Food Unit, Burgemeester Van Gansberghelaan 115, Bus 1, 9820 Merelbeke, Belgium;1. Department of Engineering, Aarhus University, Blichers Allé 20, P.O. Box 50, 8830 Tjele, Denmark;2. Beijing Agricultural Machinery Institute, 100083 Beijing, China;1. Department of Agricultural and Biosystems Engineering, Iowa State University, 3105 NSRIC, Ames, IA 50011-3310, USA;2. Department of Agricultural and Biosystems Engineering, Iowa State University, 1202 NSRIC, Ames, IA 50011-3310, USA;3. Department of Agricultural and Biosystems Engineering, Iowa State University, 1242 NSRIC, Ames, IA 50011-3310, USA;4. Department of Animal and Food Science, University of Delaware, 237 Townsend Hall, Newark, DE 19716, USA;5. College of Agriculture, Natural Resources, and Resource Development, 120 Morgan Hall, Knoxville, TN 37996, USA |
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| Abstract: | About 60% of the global methane emission is related to anthropogenic activities such as agriculture, fossil fuel use, and waste disposal. A significant part of agricultural methane emissions originates from pig husbandry, with indoor stored pig slurry as the main source. In general, the release of methane from indoor slurry storage can be influenced by availability of oxygen and volatile solids, pH value, substrate temperature, retention time, and presence of inhibiting compounds. Investigations on methane release from a pig house with indoor slurry storage were carried out from October 1999 until February 2001 and from February 2003 until July 2004, respectively. The season, in which the fattening period was accomplished, had a significant influence on the level of the methane emission rate, with increased emissions during summer. However, a clear influence of the indoor temperature – and therefore of the ventilation strategy – on the level of the methane emission rate was only found for mean daily temperatures above 25 °C. Methane emissions were reduced significantly due to complete slurry removal between the fattening periods and subsequent cleaning of the slurry pits. |
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