Effect of Dietary Supplementation of Garlic and May Flower Powder on CO₂and CH₄Emission by Hanwoo Cow

Abstract

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<0.05), and CH4 emissions was 57% lower than control (p<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.

Effects of supplementation levels of Allium fistulosum L. extract on in vitro ruminal fermentation characteristics and methane emission

“…However, it is thought to have a simultaneous reduction effect on methane and carbon dioxide emission. This result was similar to that of an in vivo study by Kim, Ha & Song (2012), who reported that the addition of garlic powder to Hanwoo cow diets increased methane and carbon dioxide emission. At 24 h incubation, methane emission and methanogenic archaea abundance decreased linearly.…”

“… Hart et al (2008) reported stable ruminal fermentation patterns as well as significant reductions in both methane output and methanogenic bacteria population. Kim, Ha & Song (2012) reported in vivo methane and carbon dioxide reduction in the rumen after treatment with powdered garlic. Medicinal properties of green welsh onions ( Allium fistulosum L.), especially antifungal and antioxidant properties, were determined; these properties were due to sulfur-containing compounds, flavonoids, fatty acids, and polyphenolic compounds ( Štajner & Milić, 2006 ; Vlase et al, 2013 ).…”

“…Therefore, it is believed that A. fistulosum will have methane reduction effects on ruminants. However, most such studies have focused on garlic ( Busquet et al, 2005a ; Busquet et al, 2005b ; Hart et al, 2008 ; Kim, Ha & Song, 2012 ; Kim et al, 2012a ), while few investigations have examined methane mitigation in ruminants using A. fistulosum.…”