بررسي منابع مختلف چربي بر عملكرد دوسويه تجاري جوجه گوشتي

Effect of Various Dietary Fat Sources on the Performance of Two Broiler Strain

An experiment was conducted to evaluate the effects of dietary fat sources on the performance and abdominal fat deposition of two broiler strain (Arian and Ross). In this experiment 864 one-day old chicks from two strain (432 Arian and 432 Ross) were fed a common basal broiler diet from I to 21 days. On day 22 up to day 49 the chicks were fed the experimental diets, which contain 40 g/kg different fat sources or their combinations. The fat sources were: tallow, sunflower oil, poultry fat, sunflower oil+ tallow, tallow + poultry fat and sunflower oil+ poultry fat. Diets were formulated to be isonitrogenous and isoenergetic. Live weight gain. feed intake and feed conversion ratio (FCR) were measured weekly. The abdominal fat deposition was determined at the end of study. Dietary fat sources did not influence (P>0.05) live weight gain and feed conversion ratio (FCR). However, dietary tat sources had a significant effect (P<0.05) on feed intake. Live weight gain and feed conversion ratio (FCR) were not different (P>0.03) among chickens fed the various fat diets. However. significant difference was obtained in the abdominal fat deposition with higher rate in sunflower oil and lower rate•.in the tallow sunflower oil treatment. The strain had a significant effect (P< 0.05) on feed intake, live weight gain and abdominal fat. but feed conversion ratio (FCR) was not affected by strain. The data finding from this experiment indicated that the using poultry fat in broiler diets as compared to other fat sources had superior effect on the reduction of abdominal fat.