That's the source of emission by the cow or steer. Industrial processing of the dung produces vastly more. Table 3 in this source [0] shows enteric vs manure m

That's the source of emission by the cow or steer. Industrial processing of the dung produces vastly more. Table 3 in this source [0] shows enteric vs manure methane emissions are 158 vs 137 kg CH4/yr for dairy cows, who are mostly fed in feedlots, and 58 vs 2.4 for meat and other cattle, in the US and Canada. So the CH4 emissions range 65-fold from 2.4 to 158 depending on how the cattle are farmed. [0] Revised methane emissions factors and spatially distributed annual carbon fluxes for global livestock. https://pmc.ncbi.nlm.nih.gov/articles/pmid/28959823/ https://pmc.ncbi.nlm.nih.gov/articles/pmid/28959823/