This experiment was carried out to evaluation usage different levels of canola oil (CO) (0, 2 and 4%) in the basal diet (corn and soybean meal) and their effects on the different parts of carcass weight (breast and thigh) and internal organs weight (liver, heart, spleen, gizzard, proventriculus and abdominal fat) in Japanese quail. A total of 135 Japanese quail were randomly divided in to 3 experimental treatments with 3 replicates (15 birds per pen) and arranged in a completely randomized design. The experimental period lasted 6 weeks and during this period, the birds have free access to feed and water. Experimental diets consisted of: Basal diet 0% canola oil, basal diet with 2% canola oil and basal diet with 4% canola oil. These diets were isonitrogenous and isoenergetic were given to Japanese quail throughout a 42-d growth period. Data was analyzed with one way ANOVA and means compared with Duncan test. Three male Japanese quail selected with each pen and slaughtered. Results showed canola oil in levels of the 4 and 2% (T3 and T2, respectively) significantly increase the chilled carcass weight, breasts, thighs, livers weight (p<0.0001), in relationship to basal diet, as the 3 treatment include of 4% canola oil has a highest effects. But canola oil in the all of the treatment not affected on the gizzards, spleens and hearts weight. Result showed canola oil in levels of 4 and 2% (T3 and T2, respectively) significantly decrease the abdominal fat deposition (p<0.0001) in relationship to basal diet, as the 3 treatment include of 4% canola oil has a highest effects.
