- Dec 8, 2007
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I seldom brew beer anymore, but 5 gallons of beer will yield 2-3 lbs of yeast, which is a lot of nutrition. But if chickens have access to very fresh manure, that too is full of B12. Rabbit manure is best, and indeed chickens spend a lot of time under rabbit cages, but even looking for fly larvae in cow pies is enough to get mega doses of the stuff.