한우 거세우의 반추위메탄가스 생성량에 대한 곡류사료원의 영향
Effect of Grain Sources on the Ruminal Methane Production in Hanwoo Steers
1
조회
0
다운로드
6
인용
0
참고문헌
키워드
초록
본 연구는 거세 한우의 비육 기간에 보리나 옥수수 위주의 농후사료를 일당 증체량 0.7kg/일에 필요한 TDN량 6.9kg씩 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 35.5Mcal/d씩 섭취했고 메탄으로 손실된 에너지는 12.2 Mcal/d와 14.9Mcal/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.
Abstract
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 ± 8.3kg) were fed, on a DM basis(TDN 6.91kg), 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. 139.4g/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(43.6kg/head/year) vs. corn(50.9kg/head/year). Methane conversion rate (Ym) was 0.04 Ym and 0.05 Ym for barley and corn, respectively.
참고문헌 (25)
- AOAC, "Official Methods of Analysis" (1990), Association of Official Analytical Chemists
- Beauchemin, K. A., "Methane emission from feedlot cattle fed barley or corn diets", J. Anim. Sci, 83, pp.653~661 (2005)
- Benchaar, C., "Evaluation of dietary strategies to reduce methane production in ruminants: A modeling approach", Can. J. Anim. Sci, 81, pp.563~574 (2001)
- Crutzen, P. J., "Methane production by domestic animals, wild ruminants, other herbivorous fauna and humans", Tellus, 388, pp.271~284 (1986)
- Duncan, D. B., "Multiple range and multi F test", Biometrics, 11, pp.1~42 (1955)
- Livestock manure management - U.S. Methane emissions 1990-2020: inventories, projections, and opportunities for reductions. US environmental protection agency, "EPA", 5~15 (1999)
- Hashizume, T., "Utilization of the energy of fattening rations containing ground or steam-rolled barley by Japanese black breed cattle, In Energy Metabolism of farm animals", pp.261~271 (1968), Oriel Press
- Houghton, J. T., "Greenhouse gas inventory reference manual. Revised 1996 IPCC Guidelines for national greenhouse gas inventories. Vol. 3" (1996), Intergovernmental panel on climate change
- IPCC, "IPCC guidelines for national greenhouse gas inventories. Chapter 10: Emission from livestock and manure management", ~ (2006)
- Johnson, D. E., "Ruminants and other animals: Atmospheric methane: Its role in the global environment", pp.112~133 (2000), Springer-Verlag
- Johnson, K. A., "Methane emissions from cattle.J.Anim.Sci.73:2483-2492", J. Anim. Sci, 73, pp.2483~2492 (1995)
- Kim, C. M., "Influence of cutting length of ammoniated barley straw on the eating and ruminating behavior of Korean native cattle", J. Anim. Sci. & Technol. (Kor), 36(5), pp.487~493 (1994)
- Lassey, K. R, "Methane emissions measured directly from grazing livestock in New Zealand", Atmos Environ, 31, pp.2905~2914 (1997)
- 이현정, "가축 장내발효에 의한 국가단위 메탄 배출통계에 관한 연구", 한국동물자원과학회지, 45(6), pp.997~1006 (2003), 한국동물자원과학회
- Leng, R. A., "Improving ruminant production and reducing methane emissions from ruminants by strategic supplementation", United States environmental protection agency office of air and radiation, ~ (1991)
- Matsuyama, H., "Control of methane production from expiratory gas by ruminal dosing with mechanical stimulating goods in holstein steer", Proc. 9th Congr. Asian-australas. Assoc. Anim, pp.215~ (2000)
- Moss, A. R., "Methane production by ruminants: its contribution to global warming", Ann. Zootech, 49, pp.321~253 (2000)
- Murray, R. M., "Rates of production of methane in rumen and large intestine of sheep", Br. J. Nutr, 36(1), pp.1~14 (1976)
- National Institute of Animal Science, "Korean Feeding Standard for Hanwoo", ~ (2007)
- "SAS User’s Guide: Statistics, Version 9.1 Edition" (2002), SAS Inst.
- Sejian, V., "Measurement and prediction of enteric methane emission", Int. J. Biometeteorol, 55, pp.1~16 (2010)
- Van Kessel, J. A. S., "The effect of pH on ruminal methanogenesis", FEMS Microbiol. Ecol, 20, pp.205~210 (1996)
- Whitelaw, F. G., "Methane formation in faunated and cilliate-free cattle and its relationship with rumen volatile fatty acid proportions", Br. J. Nutr, 52, pp.261~275 (1984)
- Williams, Y. J., "A protocol for the operation of open-circuit chambers for measuring methane output in sheep, In Measuring Methane Production from Ruminants", pp.111~123 (2007)
- Yang, W. Z., "Comparison of hull-less barley, barley, or corn for lactating cows: Effects on extent of digestion and milk production", J. Dairy. Sci, 80, pp.2475~2486 (1997)