Effect of Dietary Supplemented Canola Oil and Poultry Fat on the Performance and Carcass Characterizes of Broiler Chickens

摘要

This investigating was performed to examine the effect of different dietary fat source (canola oil and poultry fat) on broiler performance. 252 day-old broilers chicks (Ross 308) were randomly distributed in seven groups include 12 in each with 3 replicates and were fed with experimental diets for 3 weeks (21-42 d-old). The diets were as follow: 1) basal diet (control), basal diet with 3 or 6% canola oil, basal diet with 3 or 6% poultry fat, basal diet with mixed 1.5% canola oil +1.5% poultry fat and basal diet with mixed 3% canola oil +3% poultry fat. Feed intake, feed conversion ratio, daily weight gain and carcass characterizes were evaluated during rearing period. Significant different were observed for feed intake (p<0.05). Adding 3 % canola oil and poultry fat resulted in significant improvement in body weight (p<0.05) and better feed conversion ratio in fed groups 3 % canola oil and poultry fat than other groups observed (p<0.01). No significant different were found in liver, breast, thigh weights in between groups fed lipid in comparison with the control group. Addition of 6% poultry fat caused significant increasing on abdominal fat (p<0.05). Gizzard weight was significantly higher in control group in comparison with supplemented groups (p<0.05). These findings suggest that adding 3% canola oil or 3% poultry fat to the broiler diet based on corn and soybean meal can improve broiler performance and carcass quality in fed 6% canola oil than other groups was better, may be because of adequate mixture of fatty acids in supplemented canola oil.