“…The physical form of pre-start diet (1-7 days) influences the performance of broilers until the end of the initial phase (8-21 days old), but the effects diminish until slaughter age with no effect on carcass characteristics (Freitas et al, 2009). Several studies are in line with the increase of broiler performance when processed diets are offered, which is mostly explained both by improvements in weight gain and feed conversion (Jones et al, 1995;Scott et al, 1997;Leeson et al, 1999;Lecznieski et al, 2001;Vargas et al, 2001;Greenwood et al, 2004;Silva et al, 2004;Maiorka et al, 2005;Lara et al, 2008); development of the digestive tract (Shamoto & Yamauchi, 2000; Feeding Behaviour of Broiler Chickens: a Review on the Biomechanical Characteristics Engberg et al, 2002;Dahlke et al, 2003;Zang et al, 2009); increasing of feed density leading both to nutrient intake and to growth rate (Engberg et al, 2002;McKinney & Teeter 2004;Lemme et al, 2006;Freitas et al, 2008;Meurer et al, 2008;Freitas et al, 2009); greater nutrient digestibility (Moreira et al, 1994;Vargas et al, 2001;Goodband et al, 2002;Freitas et al, 2008;Zang et al, 2009); reduction on particles selectivity by the birds and better palatability (Gadzirayi et al, 2006;Lara et al, 2008); minimization of energy expenditure during feeding (Nir, et al, 1994c;Leeson et al, 1999;Jensen, 2000;López et al, 2007); decreasing of wastage (Jensen, 2000;…”