Effect of dietary fat type on fatty acids profile of muscles and liver in female and male broiler (Ross-308)

摘要

Fat feeding, through saturated fat (SF) and unsaturated fat (USF) in broiler reflects on the composition of muscles meat and liver. The objective of this study to find the reflection of the dietary type fat on fatty acids profile in main carcass muscles and liver for both sex of broiler strain (Ross-308). The experiment was done on one-day old (two genders) of 50 birds in four groups C, T1, T2 and T3. The fattening was 42 days in length, consisting of pre-starter (7 days), starter (9 days), grower (17 days) and finisher (5 days) periods. Treatments were C group (5% packed fat), and T1 ( 2.5 % packed fat +2.5% sunflower oil), T2 (2.5% packed fat +2.5% rapeseed oil), T3 (2.5% packed fat +1.25 rapeseed +1.25% sunflower oil). There were significant differences (P<0.01) among groups about percentage saturated fatty acids (SFA) and unsaturated fatty acids (USFA) in breast, thigh muscles and liver. The general result pointed to in female breast muscle, best value were in group T3 for UFA/SFA, PUFA/MUFA and MUFA/ SFA are 1.62, 0.019 and 1.59 respectively, for male breast best value for the same data were in C (1.06), T2 (0.02) and C (1.06) respectively. In female high for the same parameter, best value were in T1 (1.15), T2 (0.008) and T1 (1.148) respectively, for male were in T1 (0.92), T3 (0.023) and C (0.92) respectively. For liver parameters best value found for female in C (1.04), T3 (0.024), and C (1.030), while for liver male were in T3 (1.69), T2 (0.02) and T3 (1.66) respectively