Okay, I have 44 three week old CX (will be 4 weeks on Saturday). They have been on Nutrena NatureWise 22% meatbird feed and today I went to the feed store to get pig food for my DIL and talked to him about broiler feed. He has his own recipe and says that he has had very good feedback with it. Stupid me didn't even think to ask about the percent of protein and when I got them home I pulled a label and saw that it was 18% protein and said to feed from 5 weeks to butcher. Good Lord!!! I hate when I'm a space case about things that I know better. Will I be okay feeding them 18% from now to finish or should I go buy a couple bags of the 22%? The cost difference is Nutrena $20 per 50# and the mill mix is 20.50 for 80#. Also, do you use animal protein in your feed? Pro's and con's? Thank you in advance!!