Iowa State University Agricultural Station did experiments over a period of about 5 years show that oats are the best single grain for young growing chicks, turkeys and excellent for laying hens, too. Experimental work elsewhere also indicates that oats are highly valuable as a poultry feed. Here are a few of the conclusions we have reached about oats as a result of our own experiments and those of others:
1. They are the best single grain for poultry of those commonly available in the Corn Belt (this includes corn, wheat, barley and oats).
2. Up to 40 percent, or perhaps even more, of the ration of the growing chick, the laying hen and the turkey may well be made of oats when the quality is good and the price justifies it.
3. Chicks fed on a ration that is high in oats will grow faster and feather more rapidly than on any other common grain.
4. When laying flocks are fed only one grain, mortality is least with oats.
5. Whole oats reduce cannibalism and feather picking in growing
and laying flocks.
See the rest here (yes, the link works this time

)
https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1026&context=farmsciencereporter