Hi, been doing a lot of reading here and elsewhere and feeling a little confused about what to be feeding my flock.they're a little over 5 weeks old. I know they should get a minimum of 18% protein, is this ok (pictured below)? This is what I've been feeding them & it's 20% protein but I've also read that "scratch" is for treats only and this is called Scratch & Peck. Which leads me to my next question, at what age can I give them treats like produce scraps? Thank you!