It's very popular around here to take this for human consumption and I've seen the bags at the feed store, but can't seem to find any info on use with poultry. Anyone have any experience with this? I've been adding a little to my chickens food once in a while this Winter and haven't noticed anything bad. No sickness, so that's good. But I wonder what it actually does for them? I don't use any other vitamins or supplements. Any input would be great. Thanks!