The improvement depended on the kind of food the cows were given. Even the worst-polluting cows produced 33% less methane.(结果出乎意料地好。在某些情况下,奶牛产生的甲烷减少了82%。这种改善取决于喂给牛的食物。即使是污染最严重的奶牛产生的甲烷也少了33%。)”可知,研究人员进行这项研究是为了来测试...
根据第三段Theresultsweresurprisinglygood.Insomecases,thecowsproduced82%lessmethane.Theimprovementdependedonthekindoffoodthecowsweregiven.Eventheworst-pollutingcowsproduced33%lessmethane.Overthefivemonths,thescientistsdidn'tseeanysignsthatthecows'stomachsweregettingusedtotheseaweedandstartingtoproducemoremethaneagain...
Discusses research being done to reduce the methane gas produced by cows, conducted by researchers from the University of Nebraska, Nebraska.Johnson, ElizabethIvey, DaveFoster, J. DouglasScheid, DarrinHaddaway, RichardEverett, Alison DelsiteBest, G. AKrivyans...
By analysing results from a large number of energy balance experiments with cows, Moe and Tyrrell (1979) concluded that the yield of CH4 from cellulose was higher than that from hemicellulose, and that the yield from starch was lowest. Reported CH4 yields are 0.12 mol per 100 g of glucose,...
根据第三段T he results we re surprisingly good.In some cases, the cow s produced 82% less methane.T he improveme nt depended on the kind of food the cows wer e given.Even the worst-polluting cows produce d 33% less methane.Over the five months,th e scientists didn't see any signs...
A.To improve the cows’ living conditions. B.To test the effects of the seaweed. C.To measure the amount of methane produced by cows. D.To discover healthier grass to reduce the pollution from cows. .【小题2】What’s the third paragraph mainly about? A.The background of the subjects....
A.To improve the cows’ living conditions.B.To test the effects of the seaweed. C.To measure the amount of methane produced by cows.D.To discover healthier grass to reduce the pollution from cows. 2. What’s the third paragraph mainly about?
The objective of this study was to investigate whether measurement of methane emissions by individual dairy cows during milking could provide a useful technique for monitoring on-farm methane emissions. To quantify methane emissions from individual cows on farm, we developed a novel technique based on...
produced in the rumen exceeds the total amount of CH4by far, conclusions on the hydrogen transfer towards propionate are difficult to draw. It is also conceivable that in HM cows less hydrogen is transferred to the butyrate producing pathway as indicated by the numerically lower ruminal butyrate ...
The world’s herds of cattle belch out methane as a by-product of digestion, as do sheep and goats. That powerful greenhouse gas makes up the single biggest source of livestock emissions, which together contribute 11% to 20% of the world’s total climate...