“…Broilers fed the PC diet had higher BW gain and better FCR compared to broilers fed the NC diet (P < 0.05). Contrarily, Truelock et al [ 14 ] evaluated the effects of dietary amino acid density and exogenous protease inclusion on performance and AA digestibility in poultry and did not observe response in broiler BW gain to increasing AA density up to 1.21% dig. Lys.…”