EFFECT OF UTILIZATION DIFFERENT TYPE OF FAT IN BROILER (308) FEEDING ON THE PERFORMANCE PARAMETERS

Abstract

In this work we investigated the effect of three types of fat substances based on the use of saturated fat (SF) and unsaturated fat (USF) and also mixing between them with different level proportion in the diet of broiler (Ross-308) chickens.  Live body weight (LBW) at the end of feeding, daily weight gain (DWG), feed intake (FI), and feed conversion ratio (FCR) were evaluated. One-day 800 chickens were divided to four testing groups C, T1, T2, and T3 each group has 4 repletion’s. The fattening was 42 days in length and diets pre-starter (7 d), starter (9 d), grower (17 d) and finisher (5 d). For testing groups were enhanced with C group 5% packed fat and T1  2.5 % packed fat +2.5% rapeseed, T2 2.5% packed fat+2.5% sunflower oil, T3 2.5% packed fat +1.25 rapeseed +1.25% sunflower oil. There were insignificant differences (P>0.05) for LBW and DWG at all periods breeding and both sexes except finisher period for male was significant differences (P<0.05). The highest value for LBW was obtained in C group for males 3.027 kg and 2.522 kg for females were achieved. The highest DWG was achieved in group C for males and in females all tested groups were lower than male. Insignificant differences (P>0.05) for FI. All tested groups consumed less feed than C group. There were significant differences (P<0.05) for FCR at all periods breeding and for both sex except finisher period for female was significant differences (P<0.05). The best value of FCR was achieved in group C in male chickens in last two feeding phase, while in female chickens the best obtained in group C also at 35 d compared to other groups. For production index (PI) there were significant differences (P<0.05) among all treatments both of sex.