Grain Conversion/Production Per Acre -
poultry 2.5:1 grain to meat
beef 7:1 (grain fed beef)
With that said, let's look specifically at the production issue.
Roughly speaking, land that will produce 100 bushel-per-acre corn, will produce 400 cow-day forage (one cow day is what one
cow will eat in one day--cow-days are to graziers what inches are to carpenters and board-feet are to lumberjacks). If 100
bushels (average 60 pounds per bushel, weight 6,000 pounds), that will produce about 857 pounds of beef.
At 400 cow-days
we can carry 600 stocker calves (400-800 lb.) gaining at least 1.5 pounds per day, yielding 900 lbs. (600 X 1.5 = 900) of
beef per acre. Fairly close, wouldn't you say? The same computations can be made for dairy, but I will not belabor the point.
way to get 400 cow-days on this acre of forage, of course, is through management-intensive grazing, or MIG. What you call
it does not really matter: intensive grazing, intensive rotational grazing, controlled grazing. The point is to move the stock
to mimic grazing patterns of native herbivores.
1 acre = feed for 100 hens (Gene Logsdon)