I also feed whole grains, plus sunflower seeds. Fermented. I am lucky in that the farmers in my area grow what I buy. It is cheaper than commercial feed, and I know where it came from.
Chickengr, you never wrote that he goes to seminars and conferences all over Europe. But aside from that, we are conversing about a specific topic that he may not be up to date on. Veterinary medicine is more diverse than human medicine because they take care of so many different species.
I am...
The corn you buy from an elevator or store could be a year old. This is why it's better to buy whole corn than cracked corn.
I feed whole grains to my chickens and they eat the corn first. I think if given a choice, they would stuff down any amount of corn before they would go for wheat...