Journal of Animal Science and Technology

  • 제54권1호
  • /
  • Pages.15-22
  • /
  • 2012
  • /
  • 2672-0191(pISSN)
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  • 2055-0391(eISSN)
한국축산학회 (Korean Society of Animal Sciences and Technology)
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한우 거세우의 반추위메탄가스 생성량에 대한 곡류사료원의 영향

Effect of Grain Sources on the Ruminal Methane Production in Hanwoo Steers

  • 설용주 (농촌진흥청 국립축산과학원) ;
  • 김경훈 (농촌진흥청 국립축산과학원) ;
  • 백열창 (농촌진흥청 국립축산과학원) ;
  • 이상철 (농촌진흥청 국립축산과학원) ;
  • 옥지운 (농촌진흥청 국립축산과학원) ;
  • 이강연 (농촌진흥청 국립축산과학원) ;
  • 최창원 (대구대학교 동물자원학과) ;
  • 이성실 (경상대학교 동물생명과학과) ;
  • 오영균 (농촌진흥청 국립축산과학원)
  • 투고 : 2011.07.11
  • 심사 : 2011.11.30
  • 발행 : 2012.02.29
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초록

본 연구는 거세 한우의 비육 기간에 보리나 옥수수 위주의 농후 사료를 일당 증체량 0.7 kg/일에 필요한 TDN량 6.9 kg씩 급여하였을 때 장내 발효과정에 생성되는 메탄가스를 측정하는데 그 목적이 있다. 보리나 옥수수 급여구의 건물 섭취량은 차이가 없었으나 영양소별 섭취량은 보리와 옥수수의 영양성분의 차이에 의해서 보리 위주의 농후사료 급여구가 조단백질, 조섬유, 가용무질소물, 유기물, Neutral detergent fiber와 Acid detergent fiber의 섭취량이 유의적으로 섭취량이 높았고(p<0.05), 조지방과 조회분 섭취량은 옥수수 위주의 농후사료 급여구가 유의적으로 높았다(p<0.05). 각 영양소별 소화율은 보리나 옥수수 위주의 농후사료 급여 구 모두 건물, 조단백질, 조지방, 조회분 소화율에서 차이가 없었으나 조섬유, Neutral detergent fiber와 Acid detergent fiber 소화율은 보리 위주의 농후사료 급여 구에서 유의적으로 높았다(p<0.05). 호흡가스 발생량은 옥수수 위주의 농후사료를 급여했을 때가 산소 소모량 6.4% (p=0.32), 이산화탄소와 메탄생성량은 각각 15.4% (p=0.09)와 16.8% (p=0.09) 높은 경향이 나타났고, 메탄 배출계수는 보리나 옥수수 위주의 농후사료 급여 시 각각 43.6 (kg/Head/Year)과 50.9 (kg/Head/Year)로 산출되었다. 메탄전환계수는 보리와 옥수수 위주의 농후사료를 급여하였을 때 총에너지 섭취량은 각각 35.9 Mcal/d와 35.5 Mcal/d씩 섭취했고 메탄으로 손실된 에너지는 12.2 Mcal/d와 14.9 Mcal/d로 메탄가스 생성에 의한 메탄전환계수는 보리 위주의 농후사료 급여 구에서 4% (0.04 Ym)이었고, 옥수수 위주의 농후사료 급여 구에서 5% (0.05 Ym)로 나타났다. 따라서 위의 결과는 우리나라 한우의 사양 실정에 맞게 적용한 실험으로 향후 축산분야의 온실가스 저감을 위한 사양체계 및 메탄배출계수 산출연구에 대한 기초자료로 활용될 수 있을 것으로 판단된다.

This study was conducted to investigate the effects of grain sources on the ruminal methane production in Hanwoo steers. Six Hanwoo steers (BW = 614.4 ${\pm}$ 8.3 kg) were fed, on a DM basis (TDN 6.91 kg), 10% rice straw and 90% barley or corn based concentrate, respectively, according to Korean Feeding Standards (Hanwoo). Each period lasted 18 days including a 14-day adaptation and a 4-day measuring period. The steers were in the ventilated hood-type respiration chamber system (one cattle per chamber) during each measuring period to measure heat and methane production for 1 day. Nutrient intake and digestibility were not affected by steer fed grain sources. Methane concentration was not affected by steer fed either barley or corn-based concentrate, respectively (0.022% vs. 0.025%). Methane production was greater by steers fed corn than those fed barley (119.3 g/day vs. 139.4 g/day). This result indicated that methane emission factor by maintenance energy requirement for the late fattening Hanwoo fed corn was higher than the steers fed barley (43.6 kg/head/year) vs. corn (50.9 kg/head/year). Methane conversion rate (Ym) was 0.04 Ym and 0.05 Ym for barley and corn, respectively.

키워드

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피인용 문헌

  1. Emission by Hanwoo Cow vol.54, pp.5, 2012, https://doi.org/10.5187/JAST.2012.54.5.363
  2. Methanobrevibacter boviskoreani sp. nov., isolated from the rumen of Korean native cattle vol.63, pp.Pt 11, 2013, https://doi.org/10.1099/ijs.0.054056-0
  3. Comparison of models for estimating methane emission factor for enteric fermentation of growing-finishing Hanwoo steers vol.5, pp.1, 2016, https://doi.org/10.1186/s40064-016-2889-7
  4. Effect of Feeding Method on Methane Production per Dry Matter Intake in Holstein Steers vol.38, pp.4, 2018, https://doi.org/10.5333/KGFS.2018.38.4.260