Would be interesting to know where the material ends up, if it's not being emitted as methane. Does it contribute to the animal's solid waste? If so, how does t

Would be interesting to know where the material ends up, if it's not being emitted as methane. Does it contribute to the animal's solid waste? If so, how does the breakdown of that waste compare with the original methane problem, e.g. does it contribute to CO2 emission, similar to if the methane was collected and burned? (Each methane molecule contributes more to the greenhouse effect than a CO2 molecule, so this would still be a net win)