I have read several articles on the internet over intensive (rotational) grazing. I am a little confused as to how many cows per acre. I know ultimately it depends on your type of land, but I read the ratio can be 2-4 cattle per acre all the way up to 10 per acre. Is this ratio for the total acres (for instance 160 acres, 320-640 cows -does not sound right), or is the ratio for the average size of the paddocks (20 acres, 40-80 cows). Thanks.