I think it's a small percentage of the overall, but the carbon footprint is larger as a lot of agriculture is to feed these cows , so whatever many times the tractor has to plough spray etc all to feed a cow. Some countries are clearing forest en mass to grow cattle feed or grassland to feed cattle. Billion cows are emitting serious tons of methane , as well as all us humans , add to that pig's and poultry. Living in Devon seeing robotic milkers where cattle don't go outside unless they're dead. Surrounded by lush grass that is made into haylage or whatever, feed bought in? Farmers won't plan