Abstract: During the experiment, fifty male and fifty female chickens of similar weight were selected. Chickens were randomly divided into four groups. Four concentration of conjuqared linoleic acid (CLA) were applied for each group, which were 0% (CK), 0.25%, 0.5%, 1%. After sixty days experiment, fifteen chickens of each group were selected to determine the effect of CLA on fatty acid accumulation. Results indicated that different responses were observed among the fatty acid when application of different content of CLA. Compared to control group, the concentration of myristic acid were increased by 16.18%(P>0.05), 30.49% (P<0.01) and 40.63% (P<0.01) while palmitic acid were increased by 9.38% (P>0.05),23.81% (P<0.05),24.73% (P<0.05); In contrast, the concentration of palmitoleic acid were decreased by 5.00%,5.31%,29.00%(P<0.05). In addition, the concentration of stearic acid were increased by 19.62%,23.41%,33.46%, respectively. On contrary, the concentration of oleic acid were reduced by 14.48%,16.52%,27.23%. The concentration of linoleic acid was increased by 0.72% at the 0.25% CLA treatment, while it was decreased by 20.75%(P<0.01) and 7.1% at the treatment of 0.5% and 1% application of CLA. Apart from the change of linoleic acid, the concentration of linolenic acid were increased by 90.00%(P<0.01),92.81%(P<0.01),93.33%(P<0.01).

Key words: conjuqared linoleic acid; chickens; fatty acid