We're working with a local mill to get a custom layer mix put together for us (1000 lb order to test), since we have a somewhat varied flock. A poultry nutritionist put together a recipe for us which included an amount for DL Methionine. The mill -- which usually does cattle feeds -- doesn't think they have any DL Methionine. It seems as though DL Methionine is a synthesized product, but I've read that some herbal premixes exist. I can't seem to find any retail sources for the stuff, regardless of synthesized or not. Does anyone know where this can be obtained? Is the natural (herbal) stuff any better, since the synthesized methionine is certified organic-approved? Or ... is it even necessary? We pasture our birds, and I'm wondering if this isn't something they might get on their own from forage. Any thoughts?