It's not farting, it's belching. Can be ameliorated adding algae to the feed.

It's not very relevant to the point you're making in this case, but it's good to be precise and also might help you revisit your sources if you just didn't misspeak. https://climate.nasa.gov/faq/33/which-is-a-bigger-methane-so...

https://www.industry.gov.au/data-and-publications/from-beach...