This study carried out at Agriculture college - Tikrit University during the period from 29/3/2004 to 27/6/2004. Fifteen awassi lambs with 30.50 kg / head as average live body weight and the ages of these lambs were 4 months. Randomly the lambs fed with three levels of grinded local millet seeds ( 0.00, 42.65 and 85.30% ) for three months. Statistical analysis referred to the significant increasing in the percentage of the unsaturated fatty acids of the carcass fat and liver. On the other hand the percentage of the linoleic acid was significantly higher for the carcass fat and abidomined fat for the third treatment.