I have a flock of dual purpose chickens (Ameraucanas, Orpingtons, and Marans) that I can cross to produce sex links. Easy enough to sell the pullets, and I keep the cocks for table. However, I've just been feeding them regular chick feed and then all-flock feed from about 12 weeks on. I want to get more weight on the cockerels before slaughter, and was wondering if the additional protein of meat chicken feed would help with that. I'm not too concerned about the detrimental effects of excess protein since these birds would not be living past 20 weeks, but I wanted to know if anyone has done this before and if they got good results (noticeably heavier birds at processing time).