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首页> 外文期刊>Tropical Animal Health and Production >Reducing methane emissions and the methanogen population in the rumen of Tibetan sheep by dietary supplementation with coconut oil
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Reducing methane emissions and the methanogen population in the rumen of Tibetan sheep by dietary supplementation with coconut oil

机译：通过添加椰子油的饮食来减少藏绵羊羊瘤胃中的甲烷排放量和产甲烷菌数量

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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. CH4 emissions were measured by using the 'tunnel' technique, and microbial communities were examined using quantitative real-time PCR. Daily CH4 production 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 CH4 emissions from Tibetan sheep. The inclusion of coconut oil for the control decreased CH4 production (in grams per day) by 61.2%. In addition, there was a positive correlation between the number of methanogens and the daily CH4 production (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%) and Fibrobacter succinogenes (50-98%) but an increase in Ruminococcus flavefaciens (25-70%). The results from our experiment suggest that adding coconut oil to the diet can reduce CH4 emissions in Tibetan sheep and that these reductions persist for at least the 4-week feeding period.
机译：目的是评估膳食椰子油对藏羊绵羊甲烷（CH4）排放和微生物群落的影响。十二只动物被分配为接受对照饮食（燕麦干草）或含浓缩物的混合饮食（玉米粉），其中以12克/天或不补充椰子油的方式补充了4周的时间。通过使用“隧道”技术测量CH4排放，并使用定量实时PCR检查微生物群落。对照和牧草与浓缩物之比为6：4的每日CH4产量分别为17.8和15.3 g。椰子油对减少藏绵羊的CH4排放特别有效。包含椰子油作为对照，可使CH4产量（以克/天计）降低61.2％。此外，产甲烷菌的数量与每天的CH4产生正相关（R = 0.95，P <0.001）。包含玉米粉（6：4）和每天补充12 g椰子油的燕麦干草饮食可使产甲烷菌数量减少77％，并降低瘤胃真菌种群（85-95％）和琥珀酸纤维杆菌（50-98％） ），但黄褐球菌的数量增加了（25-70％）。我们的实验结果表明，在日粮中添加椰子油可以减少藏绵羊的CH4排放，并且这些减少至少持续了4周的喂养期。

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