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Research article2009Peer reviewed

Multi-location measurements of greenhouse gases and emission rates of methane and ammonia from a naturally-ventilated barn for dairy cows

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

Abstract

The building had 164-195 Holstein dairy cows. The milk production was 31-33 kg cow(-1)d(-1). Manure gutters beneath the partially slatted floor in the building were scraped twice a day. Measurements took place during the winter when the cows were permanently indoors and during 1 week in the spring when the cows were indoors at night and outside grazing during the daytime. The indoor concentrations were measured at nine evenly distributed locations, while outdoor concentrations were measured at two locations. The mean ventilation rate in winter was 250-26S m(3) LU(-1) h(-1) and in spring, it was 401 m(3) LU(-1) h(-1). The emissions of NH3 and CH(4) were in the range of 0.89-1.13 and 9-13 g LU-1 h-1, respectively. A strong positive correlation was found between enhanced CO(2) and CH(4) concentrations. (C) 2009 IAgrE. Published by Elsevier Ltd. All rights reserved.

Published in

Biosystems Engineering
2009, Volume: 103, number: 1, pages: 68-77 Publisher: ACADEMIC PRESS INC ELSEVIER SCIENCE

      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
          • Swensson, Christian

            • 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

            Animal and Dairy Science
            Veterinary Science

            Publication identifier

            DOI: https://doi.org/10.1016/j.biosystemseng.2009.02.004

            Permanent link to this page (URI)

            https://res.slu.se/id/publ/49957