fly larvae in the manure are on a four-day cycle, he explained. “Three days is ideal. That gives the grubs a chance to fatten up nicely, the way the hens like them, but not quite long enough to hatch into flies.” The result is prodigious amounts of protein for the hens, the insects supplying as much as a third of their total diet—and making their eggs unusually rich and tasty. By means of this simple little management trick, Joel is able to use his cattle’s waste to “grow” large quantities of high-protein chicken feed for free; he says this trims his cost of producing eggs by twenty-five cents
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