I have had this issue specifically with purina chick starter and while I cant be for sure there's something wrong, my experience with purina dog food and catfood makes me not trust them.
The food made my animals sick. I put it in the shed and the rats wouldnt even eat it. Found some coarse red metal thread in the dogfood after my dog had been vomiting and had bloody diarrhea. That was in fact the food.
I have good reason for not trusting purina, and for whatever reason, my chicks in the past wouldnt eat it and I had to replace the food and they made a miraculous turnaround.
This time, I didnt get the chance.
This isnt a one time issue. It is very fresh and upsetting right now because ONLY purina was available to me. I was hopeful and tried everything I could, and it didnt turn out well.
I apologize if I offended you or made you feel the need to advocate for their corporate interest, but I feel the things purina cost me cant be replaced. I certainly dont trust them any more today.
Out of all of my turkeys, guineas, quail, chickens, geese, ducks... nobody likes that starter. It is literally money thrown away.