I went to buy a 2nd bag of feed for my 12week old chicks, and was given Purina game bird & turkey startena. It is 30% protein. This is not the same store i got my 1st bag of feed from, the other store is much farther away but they gave me Nutrena 18% starter/grower. I was told that everyone there feeds their chickens this Purina game bird and turkey startena, and its perfectly fine. So my question is, is it really okay? I mean I can't make much sense of this. 18% to 30% seems like a huge jump, and why wouldn't Purina say it was for chickens as well if its okay?