I find it interesting that it says that the grains give the chick "less digestive disturbances." Their system is not used to any solid food, so I would think any appropriate feed would be about the same in that regard. It is interesting, but I think I will go with the advances in nutritional science and use complete and balanced feeds. Might a well give them every advantage I can. I'm sure I'll find my own ways to screw up lol. Cool old book, thanks for sharing!