About 45% of these emissions come from farms, 12% from cars. The national speed limit was lowered from 130 to 100 km/hr to deal with this issue (happened a few years ago)
Plants turn CO2 into proteins and sugars. One of two things happens. Either the cattle eat the plants and process them
or the plants rot and produce CO2 and Methane which quickly becomes CO2.
Animals eat the plant some of the CO2 is stored as fat and protein. The remainder is exuded in the form of cowshit and farts. The cowshit goes back to the soil and into plants. The Methane produced quickly becomes CO2 which is, AGAIN, used by the plants to produce plant growth. How is a single atom of carbon actually created in any of this? Sure ,if animal numbers suddenly expand rapidly, you get a very very minute increase in Methane levels. The effect is indiscernible in reality.