A study was conducted to evaluate the effect of nutrient density and feed form on productive performance and blood parameters of broiler chickens. Two hundred Arbor Acres day-old broiler chicks were divided into five dietary nutrient density groups and two feed forms (mash and pellets). Experimental diets were formulated to contain nutrients recommended by NRC (control), two high levels (H1, H2) and two low levels (L1, L2) from metabolizable energy, crude protein and amino acids (methionine and lysine). Feeding the low nutrient density diets (L1, L2) led to significantly lower feed intake and produced significantly better means of live body weight, body weight gain and feed conversion ratio as compared to other groups. Birds fed on the mash diets consumed less fed exhibited better feed conversion ratio compared with those fed the pellet diets. There were no significant effect of nutrient density on plasma level of glucose, total protein and albumin of broiler chicks. However, plasma activity of transaminases (ALT and AST) increased significantly (P≤0.05) in response to feeding the low levels of nutrient density (L1, L2). There were no significant effects of feed form on plasma level of total protein, albumin or activity of  ALT and AST in plasma while, birds fed the mash diets displayed significantly higher (P≤0.05) plasma glucose concentration compared with those fed the pelleted diets. There were no significant effects of nutrient density on plasma level of total lipids, triglycerides, cholesterol, high- density lipoprotein (HDL) and low- density lipoprotein (LDL). No significant effects were observed of feed form on plasma level of total lipids, triglycerides, cholesterol, HDL and LDL. Thus, it can be concluded that it is possible to reduce dietary nutrient density for broiler chicks without any detrimental impact on their growth performance or blood parameters.