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Conference paper2010

Influence of animal activity and weight gain on the ventilation and emission rates of greenhouse gases and ammonia from a fattening pig building in summer

Martin Ngwabie, Ngwa; Jeppsson, Knut-Håkan; Nimmermark, Sven; Gustafsson, Gösta

Abstract

Variations in CH4, N2O, CO2 and NH3 emissions from livestock may be caused by management routines, changes in animal activity and weight. These were investigated in a mechanically-ventilated, slurry-based pig building with a partly slated floor. The manure channels were emptied between 8–9 a.m. The ventilation rate, which was kept constant, was measured with an anemometer and calculated based on CO2 balance. The difference between both methods increased from 3% at the beginning to 35% at the end of the fattening period. Significant correlations (p < 0.001) existed between the activity and the emission rates of CO2 (r = 0.89), NH3 (r = 0.65) and N2O (r = 0.74), but not for CH4. CO2 and NH3 emissions increased at rates of 18 g CO2 pig-1 d-1 and 82 mg NH3 pig-1 d-1. CH4 emission was dumped-shaped with a maximum at pig weight of about 75 kg

Published in

Title: International Conference on Agricultural Engineering - AgEng 2010: towards environmental technologies, Clermont-Ferrand, France, 6-8 September 2010
Publisher: Cemagref

Conference

International Conference on Agricultural Engineering - AgEng 2010: towards environmental technologies

SLU Authors

  • Martin Ngwabie, Ngwa

    • Department of Rural Buildings and Animal Husbandry [LBT], Swedish University of Agricultural Sciences

  • Jeppsson, Knut-Håkan

    • Department of Rural Buildings and Animal Husbandry [LBT], Swedish University of Agricultural Sciences

  • Nimmermark, Sven

    • Department of Rural Buildings and Animal Husbandry [LBT], Swedish University of Agricultural Sciences

  • Gustafsson, Gösta

    • Department of Rural Buildings and Animal Husbandry [LBT], Swedish University of Agricultural Sciences

UKÄ Subject classification

Agricultural Science
Animal and Dairy Science

Publication identifier

  • ISBN: 9782853626842

Permanent link to this page (URI)

https://res.slu.se/id/publ/32439