Since most of my birds are of laying age, I have been feeding Layena for over a year. I had a drop in egg production pretty drastic during the fall. I figured something must be up and wormed and added some oyster shell. Still not much in egg production. It seemed weird since I had good luck with it over the years time. I had a batch of silkie chicks I was going to add in the silkie coop. They were not quite laying age, so I picked up a couple bags of Flockraiser for their coop. Within two days I had silkie eggs coming out my ears. I was shocked. Prompty had one hen go broody too. So I went ahead and switched my entire flock over to Flockraiser and have had a lot better egg production since. In fact, for it being our coldest month so far we are up in production. Now, some of my birds did go through a molt, but not everyone. There should have been no reason for the drop in egg production that drastic.....like 30 something hens and no eggs for days. I spoke with my local feed dealer and all he could say is that maybe they changed the formula some because of the season. Anyhow, I am buying Flockraiser from now on. Oh, and I have always done crumbles also, so no change there.