One hundred twenty eight Hubbard breed chicks (64 males and 64 females) were used in a completely randomized design with four replicates and eight chicks per experimental unit, to evalatue the effect of different types of soybean oil on fatty acids composition of broiler carcass. The treatments consisted of isocaloric and isonutritive diets formulated with different soybean oils as follows: treatment 1 - control group without oil addition; treatment 2 - refined soybean oil; treatment 3 -degumed soybean oil; and treatment 4 - acid soybean residue. The chickens were slaughtered, eviscerated, frozen and grounded, and a pool of four carcasses per replicate was obtained. Analyses of ether extract and fatty acid composition of carcasses fat were performed. The males fed on control diet accumulated more myristic acid on their carcasses than the females (P<0.05), while broilers fed on refined soybean oil diet deposited more stearic acid on their carcasses than those fed on the other diets (P<0.05). The carcasses of broilers fed on oil added diets had lower palmitoleic fatty acid contents than those fed on control diet. Carcasses of broilers fed on control diet and on acid residue diet showed more oleic acid than those fed on refined soybean oil diet. Broilers fed on refined soybean oil and deggumed soybean oil diets had an increase in the linoleic fatty acid content of the carcass fat.
chicken; carcass; fatty acids; oils; fat; diet
