I sprinkle a small handful into 5Kg of feed and use it regularly. I believe it is one of the few seeds which contain Cobalt, the B12 synthesizer and Silicon which gives tensile strength to the feathers. Ideal to be mixed 50 / 50 with Hemp in a trapping mix or bound into your feed with oils or ACV, since they don't really like eating it unless they have the taste for the Hemp or eat it when it is stuck to some other seed in your mix. It is an oil seed, so should be fed sparingly, thus the small handful to 5Kg.