Reducing methane emissions and the methanogen population in the rumen of Tibetan sheep by dietary supplementation with coconut oil
Reducing methane emissions and the methanogen population in the rumen of Tibetan sheep by dietary supplementation with coconut oil
复制标题
通过膳食补充椰子油减少藏羊瘤胃中的甲烷排放和产甲烷菌数量
DOI：
10.1007/s11250-012-0103-7
复制
发表时间：
2012-10-01
影响因子：
1.7
通讯作者：
Mi, Jiandui
中科院分区：
文献类型：
--
作者：
Ding, Xuezhi;Long, Ruijun;Mi, Jiandui
The objective was to evaluate the effect of dietary coconut oil on methane (CH4) emissions and the microbial community in Tibetan sheep. Twelve animals were assigned to receive either a control diet (oaten hay) or a mixture diet containing concentrate (maize meal), in which coconut oil was supplemented at 12 g/day or not for a period of 4 weeks. CH4emissions were measured by using the ‘tunnel’ technique, and microbial communities were examined using quantitative real-time PCR. Daily CH4production for the control and forage-to-concentrate ratio of 6:4 was 17.8 and 15.3 g, respectively. Coconut oil was particularly effective at reducing CH4emissions from Tibetan sheep. The inclusion of coconut oil for the control decreased CH4production (in grams per day) by 61.2%. In addition, there was a positive correlation between the number of methanogens and the daily CH4production (R= 0.95,P< 0.001). Oaten hay diet containing maize meal (6:4) plus coconut oil supplemented at 12 g/day decreases the number of methanogens by 77% and a decreases in the ruminal fungal population (85–95%) andFibrobacter succinogenes(50–98%) but an increase inRuminococcus flavefaciens(25–70%). The results from our experiment suggest that adding coconut oil to the diet can reduce CH4emissions in Tibetan sheep and that these reductions persist for at least the 4-week feeding period.
