One experiment was conducted to study the utilizationof animal by-products in broilers diets based on the concept of crude and idealprotein form 43 to 49 days of age. Sixty hundred Ross male broilers were usedin a factorial arrangement 2x2+1 (two animal sources by-products poultryviscera meal and bovine blood meal crude and ideal protein) and one basal diet(corn + soybean meal), envolving a total of five treatments with four replicationsof thirty broilers each. Weight gain, feed intake, feed conversion, carcassand breast yield and the abdominal fat percentage were evaluated. The best weightgain and feed conversion were obtained when birds were fed a corn and soybeanmeal based diet. The poultry viscera and bovine blood meals and formulationconcepts did not influence on evaluated parameters.
