A total of 1307 quail chicks were hatched in two lots, from three quail lines (White-W, Light brown-Lb and Dark brown-Db). The experiment was conducted at the Poultry Farm of Animal Production Dept., College of Agriculture, University of Duhok, Kurdistan region-Iraq. The trial aimed to evaluate the genetic background of three quail lines for some productive traits by using the full diallel cross design. The following genetic parameters were estimated; general combining ability (GCA), specific combining ability (SCA), heterosis (H%), reciprocal effect (R E), maternal effect (M E), genetic value (GV), heritability (h 2) and genetic correlation (r g); on body weight (BW) and feed conversion ratio (FCR). The main results from the present study could be summarized as follow: GCA, SCA and R E showed significant differences among the studied genotypes for BW trait. All studied genotypes didn't differ significantly in H% percentage and M E at 0, 4 and 5 weeks old for BW trait. All studied genotypes didn't differ significantly in FCR for all studied parameters. The highest GV was recorded for (W*Db) cross. The highest h 2 estimation (0.76) was recorded for FCR in Lb line. As conclusion, it may use the Lb line as dam for meat production lines.