Abstract: 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 broiler chick’s. A total of 90 Ross 308 strain mail broiler were randomly divided in to 3 experimental treatments with 3 replicates (10 chicks per pen) and arranged in a completely randomized design. The experimental period lasted 6 weeks and during this period, the birds had 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 broiler chickens throughout a 42 days growth period. Data was analyzed with one way ANOVA and means compared with Duncan test. Three male birds selected with each pen and slaughtered. Result showed canola oil in levels of 4 and 2% (T3 and T2, respectively) significantly increase the chilled carcass weight, breasts, thighs, livers and spleens weight (p<0.0001), in relationship to basal diet, as the 3 treatment include of 4% canola oil has a highest effects. Too canola oil in levels of 4 and 2% (T3 and T2, respectively) increase the gizzards and hearts weight, respectively but not significantly. 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.
P. Fouladi , R. Salamat Doust Nobar , A. Ahmadzade , H. Aghdam Shahriar and A. Noshadi , 2008. Effect of Canola Oil on the Internal Organs and Carcass Weight of Broilers Chickens. Journal of Animal and Veterinary Advances, 7: 1160-1163.