I was away for the weekend, and the person looking after my chickens (they are 10 weeks old) fed them scratch instead of feed for 3 days. Are they going to be ok? They seem fine, just big. Do I need to put them on a low fat diet?? I'm currently feeding them "general poultry feed" 18% protein (which the feed store said was the same as developer/grower feed - not sure I believe him). Thanks so much for your help!!