TY - JOUR
T1 - Multi-location measurements of greenhouse gases and emission rates of methane and ammonia from a naturally-ventilated barn for dairy cows
AU - Martin Ngwabie, Ngwa
AU - Jeppsson, Knut-Håkan
AU - Nimmermark, Sven
AU - Swensson, Christian
AU - Gustafsson, Gösta
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - https://res.slu.se/id/publ/49957
U2 - 10.1016/j.biosystemseng.2009.02.004
DO - 10.1016/j.biosystemseng.2009.02.004
M3 - Journal article
SN - 1537-5110
VL - 103
SP - 68
EP - 77
JO - Biosystems Engineering
JF - Biosystems Engineering
IS - 1
ER -