@aart I have the same issue with Dumor Starter/Grower. (Made by Purina) I bought this bag about 3 weeks ago and when fermenting, it is not as dark and my chickens don't finish it every day. The code on the seal band is: 7AUG30STA(2?) It looks like a 2 at the end. Since I started feeding this bag, I am only getting 2 or 3 eggs a day, when I was getting 5 - 7 a day. I know the days are getting shorter, with light but this happened since this bag of feed. I'm wondering if a protien ingredient was left out.