Methane, nitrous oxide and ammonia emissions from pigs housed on litter and from stockpiling of spent litter

Handle URI:
http://hdl.handle.net/10754/621800
Title:
Methane, nitrous oxide and ammonia emissions from pigs housed on litter and from stockpiling of spent litter
Authors:
Phillips, F. A.; Wiedemann, S. G.; Naylor, T. A.; McGahan, E. J.; Warren, B. R.; Murphy, C. M.; Parkes, Stephen; Wilson, J.
Abstract:
Mitigation of agricultural greenhouse gas emissions is a target area for the Australian Government and the pork industry. The present study measured methane (CH4), nitrous oxide (N2O) and ammonia (NH3) from a deep-litter piggery and litter stockpile over two trials in southern New South Wales, to compare emissions from housing pigs on deep litter with those of pigs from conventional housing with uncovered anaerobic effluent-treatment ponds. Emissions were measured using open-path Fourier transform infrared spectrometry, in conjunction with a backward Lagrangian stochastic model. Manure excretion was determined by mass balance and emission factors (EFs) were developed to report emissions relative to volatile solids and nitrogen (N) input. Nitrous oxide emissions per animal unit (1 AU ≤ 500 kg liveweight) from deep-litter sheds were negligible in winter, and 8.4 g/AU.day in summer. Ammonia emissions were 39.1 in winter and 52.2 g/AU.day in summer, while CH4 emissions were 16.1 and 21.6 g/AU.day in winter and summer respectively. Emission factors averaged from summer and winter emissions showed a CH4 conversion factor of 3.6%, an NH3-N EF of 10% and a N2O-N EF of 0.01 kg N2O-N/kg N excreted. For the litter stockpile, the simple average of summer and winter showed an EF for NH3-N of 14%, and a N2O-N EF of 0.02 kg N2O-N/kg-N of spent litter added to the stockpile. We observed a 66% and 80% decrease in emissions from the manure excreted in litter-based housing with litter stockpiling or without litter stockpiling, compared with conventional housing with an uncovered anaerobic effluent-treatment pond. This provides a sound basis for mitigation strategies that utilise litter-based housing as an alternative to conventional housing with uncovered anaerobic effluent-treatment ponds. © CSIRO 2016.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Phillips FA, Wiedemann SG, Naylor TA, McGahan EJ, Warren BR, et al. (2016) Methane, nitrous oxide and ammonia emissions from pigs housed on litter and from stockpiling of spent litter. Anim Prod Sci 56: 1390. Available: http://dx.doi.org/10.1071/an15650.
Publisher:
CSIRO Publishing
Journal:
Animal Production Science
Issue Date:
5-May-2016
DOI:
10.1071/an15650
Type:
Article
ISSN:
1836-0939
Sponsors:
This project was supported by funding from the Australian Government Department of Agriculture as part of its Carbon Farming Futures Filling the Research Gap Program and Australia Pork Limited (APL). The authors thank the participating producer Ean Pollard for facilitating the trials. Project management support by Orla Keane, FSA consulting, is gratefully acknowledged.
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorPhillips, F. A.en
dc.contributor.authorWiedemann, S. G.en
dc.contributor.authorNaylor, T. A.en
dc.contributor.authorMcGahan, E. J.en
dc.contributor.authorWarren, B. R.en
dc.contributor.authorMurphy, C. M.en
dc.contributor.authorParkes, Stephenen
dc.contributor.authorWilson, J.en
dc.date.accessioned2016-11-03T13:25:15Z-
dc.date.available2016-11-03T13:25:15Z-
dc.date.issued2016-05-05en
dc.identifier.citationPhillips FA, Wiedemann SG, Naylor TA, McGahan EJ, Warren BR, et al. (2016) Methane, nitrous oxide and ammonia emissions from pigs housed on litter and from stockpiling of spent litter. Anim Prod Sci 56: 1390. Available: http://dx.doi.org/10.1071/an15650.en
dc.identifier.issn1836-0939en
dc.identifier.doi10.1071/an15650en
dc.identifier.urihttp://hdl.handle.net/10754/621800-
dc.description.abstractMitigation of agricultural greenhouse gas emissions is a target area for the Australian Government and the pork industry. The present study measured methane (CH4), nitrous oxide (N2O) and ammonia (NH3) from a deep-litter piggery and litter stockpile over two trials in southern New South Wales, to compare emissions from housing pigs on deep litter with those of pigs from conventional housing with uncovered anaerobic effluent-treatment ponds. Emissions were measured using open-path Fourier transform infrared spectrometry, in conjunction with a backward Lagrangian stochastic model. Manure excretion was determined by mass balance and emission factors (EFs) were developed to report emissions relative to volatile solids and nitrogen (N) input. Nitrous oxide emissions per animal unit (1 AU ≤ 500 kg liveweight) from deep-litter sheds were negligible in winter, and 8.4 g/AU.day in summer. Ammonia emissions were 39.1 in winter and 52.2 g/AU.day in summer, while CH4 emissions were 16.1 and 21.6 g/AU.day in winter and summer respectively. Emission factors averaged from summer and winter emissions showed a CH4 conversion factor of 3.6%, an NH3-N EF of 10% and a N2O-N EF of 0.01 kg N2O-N/kg N excreted. For the litter stockpile, the simple average of summer and winter showed an EF for NH3-N of 14%, and a N2O-N EF of 0.02 kg N2O-N/kg-N of spent litter added to the stockpile. We observed a 66% and 80% decrease in emissions from the manure excreted in litter-based housing with litter stockpiling or without litter stockpiling, compared with conventional housing with an uncovered anaerobic effluent-treatment pond. This provides a sound basis for mitigation strategies that utilise litter-based housing as an alternative to conventional housing with uncovered anaerobic effluent-treatment ponds. © CSIRO 2016.en
dc.description.sponsorshipThis project was supported by funding from the Australian Government Department of Agriculture as part of its Carbon Farming Futures Filling the Research Gap Program and Australia Pork Limited (APL). The authors thank the participating producer Ean Pollard for facilitating the trials. Project management support by Orla Keane, FSA consulting, is gratefully acknowledged.en
dc.publisherCSIRO Publishingen
dc.subjectgreenhouse gasen
dc.titleMethane, nitrous oxide and ammonia emissions from pigs housed on litter and from stockpiling of spent litteren
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalAnimal Production Scienceen
dc.contributor.institutionCentre for Atmospheric Chemistry, School of Chemistry, Faculty of Science, Medicine and Health, University of WollongongNSW, Australiaen
dc.contributor.institutionFSA Consulting, PO Box 2175, Toowoomba, QLD, Australiaen
kaust.authorParkes, Stephenen
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