We have 3 different groups of cows.
My dairy cows--just a couple that we use for family milking and nurse cows.
My dh's commercial beef cows--sell for slaughter and raise for freezer beef.
My dh's registered beef cows--sell for pedigree.
Keep in mind that unless you raise a beef/dairy cross, the needs of a pure dairy animal are different than a beef type cow. This is something I am learning myself.