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Emission Rate of Greenhouse Gases from Bedding Materials of Cowshed Floor: Lab-scale simulation study

우사깔짚에서 발생되는 온실가스 배출량 산정: 모의 실험결과

  • Cho, Won Sil (Department of Animal Life System, College of Animal Life Science, Kangwon National University) ;
  • Lee, Jin Eui (Department of Animal Life System, College of Animal Life Science, Kangwon National University) ;
  • Park, Kyu Hyun (National Institute of Animal Science, RDA) ;
  • Kim, Jeong Dae (Department of Animal Life System, College of Animal Life Science, Kangwon National University) ;
  • Ra, Chang Six (Department of Animal Life System, College of Animal Life Science, Kangwon National University)
  • 조원실 (강원대학교 동물생명과학대학) ;
  • 이진의 (강원대학교 동물생명과학대학) ;
  • 박규현 (국립축산과학원) ;
  • 김정대 (강원대학교 동물생명과학대학) ;
  • 라창식 (강원대학교 동물생명과학대학)
  • Received : 2013.01.02
  • Accepted : 2013.02.19
  • Published : 2013.02.28

Abstract

To know the emission amount of greenhouse gases from bedding materials of cowshed floor, the emission rates of methane ($CH_4$) and nitrous oxide ($N_2O$) gases from a simulated cowshed floor (SCF) with sawdust that manure loading rate into the bedding material could be accurately controlled were assessed in this study. The manure loading rates of Korean beef and Holstein dairy cattle into the SCF of $0.258m^2$ surface area with 10 to 15 cm height sawdust were $1.586kg/m^2/d$ and $3.588kg/m^2/d$, respectively, and those were calculated on the basis of "Standard model for sustainable livestock" and "Data for excretion amount of manure from livestock". All experiments were done in triplicates in three different seasons (May to July, Sep. to Nov., and Feb. to Apr.) using 12 SCFs. The effects of bedding material thickness on $CH_4$ and $N_2O$ emission from SCFs for both Korean beef cattle and Holstein dairy cattle were not statistically significant (p<0.05). Emission amount of $CH_4$ and $N_2O$ per square meter of SCF for Holstein dairy cattle was 7.5 and 1.2 times higher than that of Korean beef cattle, respectively. The yearly $CH_4$ amount per head was 17.7 times higher in Holstein dairy cattle, obtaining 130.4 g/head/year from SCF for Holstein dairy cattle and 7.4 g/head/year from SCF for Korean beef cattle, and $N_2O$ was also 3.8 times higher in Holstein dairy cattle (3,267 g/head/year in Korean beef cattle and 14,719 g/head/year in Holstein dairy cattle). However, the $N_2O$-N per loaded nitrogen into SCF was higher in Korean beef cattle, having 0.2148 and 0.1632 kg $N_2O$-N/kg N in Korean beef cattle and Holstein dairy cattle, respectively, and those values were 3.07 and 2.33 times higher than that of Intergovernmental Panel on Climate Change (IPCC) 2006 guideline (GL) (0.07 kg $N_2O$-N/kg N).

Keywords

Methane;Nitrous oxide;Emission rate;Cowshed floor

Acknowledgement

Supported by : 농촌진흥청

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