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KMID : 1025520110530050475
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Journal of Animal Science and Technology
2011 Volume.53 No. 5 p.475 ~ p.480
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Evaluation on the Greenhouse Gas Emission According to the Intake Levels of Total Mixed Rations of Hanwoo Cow
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Kim Du-Ri
Ha Jae-Jung
Kim Jong-Taek
Song Young-Han
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Abstract
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This study was conducted to investigate the effects of different feeding level of TDN(Total Digestible Nutrients) on the generation of main greenhouse gases such as carbon dioxide and methane in Hanwoo cows. The diet TDN(kg) adjusted to achieve ADG of 0g/day(Control), 200g/day(T1), and 400g/day(T2) of the maintenance level TMR(Total Mixed Ration) delivered twice a day at 08:30 and 17:30. Cow are housed in a respiration chamber and the environmental temperature was maintained at 20℃. The gases were measured for 24 hours using the multi-detector instrument Mamos-300. The analyzed methane emissions of T1 and T2 were 33.5% and 69.6% higher than control, respectively, and the carbon dioxide emissions were 21.1% and 40.6% higher than control. Also, the hourly pattern of carbon dioxide and methane production were showed very similar emission. Gas production showed peak after 1 hour of feeding and this gap was wider in the afternoon than in the morning hours. It is clearly conducted that CO_2 and CH_4 emissions were different by limited intake levels of feed.
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KEYWORD
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Carbon dioxide, Hanwoo, Methane gas, TDN, TMR
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