Can anyone provide a sense of scale and impact if these results were to hold and if the majority of the world beef production were to switch to it?
Yes. According to the numbers of Food and Agriculture Organization of the United Nations, this would be about a 6.4% reduction in total green house gas emissions. See below for the numbers
> Total emissions from global livestock: 7.1 Gigatonnes of Co2-equiv per year, representing __14.5 percent of all anthropogenic GHG emissions__. This figure is in line FAO’s previous assessment, Livestock’s Long Shadow, published in 2006, although it is based on a much more detailed analysis and improved data sets. The two figures cannot be accurately compared, as reference periods and sources differ.
> About __44 percent of livestock emissions are in the form of methane__ (CH4). The remaining part is almost equally shared between Nitrous Dioxide (N2O, 29 percent) and Carbon Dioxide (CO2, 27 percent).
http://www.fao.org/news/story/en/item/197623/icode/
Food and Agriculture Organization of the United Nations
Yes. According to the numbers of Food and Agriculture Organization of the United Nations, this would be about a 6.4% reduction in total green house gas emissions. See below for the numbers
> Total emissions from global livestock: 7.1 Gigatonnes of Co2-equiv per year, representing __14.5 percent of all anthropogenic GHG emissions__. This figure is in line FAO’s previous assessment, Livestock’s Long Shadow, published in 2006, although it is based on a much more detailed analysis and improved data sets. The two figures cannot be accurately compared, as reference periods and sources differ.
> About __44 percent of livestock emissions are in the form of methane__ (CH4). The remaining part is almost equally shared between Nitrous Dioxide (N2O, 29 percent) and Carbon Dioxide (CO2, 27 percent).
.44 * 14.5 = 6.38%