Effect of Dietary Supplementation of Garlic and May Flower Powder on CO₂ and CH₄ Emission by Hanwoo Cow
2012
Kim, D.R., Kangwon National University, Chuncheon, Republic of Korea | Ha, J.J., Kangwon National University, Chuncheon, Republic of Korea | Song, Y.H., Kangwon National University, Chuncheon, Republic of Korea
This study was conducted to investigate the effects of dietary garlic and may flower powder on CO₂ and CH₄ emission by Hanwoo cows fed TMR (Total Mixed Ration) based diet. Animals were housed in a hood-type respiration chamber and the environmental temperature was maintained at 20℃. Gases were measured for 24 hours using the multi-detector instrument gas monitoring system (Mamos-300, Australia). The treatments composed of groups with no intake of garlic and may flower powder (Control), with intake of garlic at 0.5% of DM (T1), with intake of garlic at 1% of DM (T2), with intake of may flower at 0.5% of DM (T3), with intake of may flower at 1% of DM (T4), with intake of garlic and may flower at 0.5% of DM (T5) and with intake of garlic and may flower at 1% of DM (T6). The results indicated that CO₂ emission in T3 was 53% lower than that of control (p less than 0.05), and CH₄ emissions was 57% lower than control (p less than 0.05). Also, the hourly pattern of CO₂ and CH₄ emissions in T3 showed the least difference with all treatments. Gas emissions pattern peaked after 1 hour of feeding and this gap was wider in the afternoon than in the morning hours.
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