Authors : H. Aghdam Shahriar , A. Rezaei , A. Lak and A. Ahmadzadeh
Abstract: An experiment was conducted to study the effect of different levels of dietary fat source (canola oil and poultry fat) on blood and tissue biochemical factors of broiler chickens. A total of 180 day-old broilers chicks (Ross 308) were randomly assigned in to 5 dietary treatments (3 replicates of 12 birds per treatment) fed experimental diets. The experiment was performed in a Completely Randomize Design (CRD) and birds were fed with experimental diet for the period of 3 weeks (21-42 d-old). The experimental treatment included) basal diet without fat supplementation ) basal diet with 3% canola oil ) basal diet with 6% canola oil ) basal diet with 3% poultry fat ) basal diet with 6% poultry fat. The criteria measured were the levels of cholesterol, triglyceride, HDL and LDL in blood, also levels of cholesterol and triglyceride in tissue (breast and thigh). Blood biochemical factors were not significantly influenced by dietary fat. Adding 3% poultry fat to the diet, significantly decrease levels of cholesterol and triglyceride in thigh tissue (p< 0.01) and at the level of 6% decrease level of cholesterol in breast tissue (p< 0.01). The highest triglyceride was found in breast tissue of control group compared with other groups (p< 0.05). These results suggest that poultry fat supplementation induced a significant decrease in triglyceride and cholesterol concentrations in tissue (breast and thigh) in comparison with that receiving canola oil.
H. Aghdam Shahriar , A. Rezaei , A. Lak and A. Ahmadzadeh , 2007. Effect of Dietary Fat Sources on Blood and Tissue Biochemical Factors of Broiler . Journal of Animal and Veterinary Advances, 6: 1304-1307.