I started mixing a feed based on a recipe I found here and further research. They have been eating this mix for a year. Egg production has decreased suddenly. At first I thought it was just because they were molting. We were harvesting our roosters, so we also harvested a couple hen. Before harvesting we first noticed a swollen abdomen. Once harvested, we saw that their organs were covered with fat. So I checked some other hens and found several with swollen abdomens and again their organs were covered with fat. After looking into this, it sounds as though it is fatty liver disease which is caused by diet. So I am wondering if anyone who has mixed their feed longer than a year has run into any issues. I was adding corn only 50% of the time at a ratio of 1/15 I used no soy I added in a layer feed 50% of the time at a ration of 1/15 Any ideas about what went wrong?