I have used dumor, I've had no problem with it at all. when I used medicated feed, i had some issues but that was also another brand.
Thanks Hoppy. I did not want to disparage the brand, and knew that if I posted that some one with experience would weigh in on the subject. I'm glad to hear from you that the 20% protein is not the cause. From what I've read, it's strictly vitamin E deficiency, and nutrition in feed tends to deteriorate over time. I just wanted to give people a heads up so if they see this problem, they can treat it. Have you had experience with Dumour, and this question is for you and all of the other long term chicken people out there: Regarding prepared general chicken feed, (starter, grower and layer pellets) have any of you noticed an appreciable difference in quality and outcome when using one feed over an other. Of course, the length of time a bag of feed has been sitting around in the feed store plays a role also.