May 06, 2014 · For a 100 cow herd, this would give a total, traditional feeding cost of $27,200, and TMR feeding would be expected to decrease feed cost by $4,080 to $5,440 per year (15-20 % savings). Assuming traditional sales of 83 calves weighing 500 lbs. each at a conservative $1.75 per lb., annual revenue would be $72,625.