I suspect the variance in the gallons/pound numbers is due to attribution. Water fed to cows counts. Water fed to alfalfa fed to cows counts. Does water fed to

I suspect the variance in the gallons/pound numbers is due to attribution. Water fed to cows counts. Water fed to alfalfa fed to cows counts. Does water fed to farmers who farm alfalfa fed to cows count? What if my cow eats corn, not alfalfa? What if my cow grazes open pasture? Does water spent producing petroleum to freight beef count?