Now, if all this methane could somehow be contained, it could be utilized, perhaps as a substitute for natural gas which is, after all, methane. "Mother Earth News," back in the '70s, used to run plans for a methane digester, but that created it instead of getting it from mobile sources...hmmmm. Special underwear, I think, which collects methane in the fabric and weave -- every night when you take it off you toss it into an extraction apparatus, which uses the gas to supplement your household heating.
Cows and other runiments could wear special nappies...use the gas to power the farm.