This study aimed to investigate the feed intake, feed conversion ratio, growth performance, first laying age, and egg quality of Japanese quail lines. The study material consisted of Yamtar-I and Yamtar-II Japanese quail lines bred on a private farm in Karaman province, along with a control group derived from these lines. From 0-5 weeks of age, Yamtar-II showed higher live weight than the control group at 5 weeks, though averages were similar during the first four weeks of age (p<0.01). Growth and fattening analysis revealed significant differences in live weight gain and daily live weight gain between 3-4 and 4-5 weeks of age (p<0.05), while feed intake and feed conversion ratios were similar. Egg production was monitored from first laying to 93 days of age, with quails housed in 1:2 (male/female) single mating cages. At 10 weeks of age, egg quality characteristics were analyzed using 20 quail eggs per group. The control group showed delayed egg laying (p<0.01), and lower egg production (p<0.05) compared to the other groups. Significant differences in egg and yolk weights (p<0.01) were found among the groups. On the other hand, shape index, shell thickness, shell ratio, yolk ratio, Haugh unit, albumen weight, and albumen ratio were similar. In conclusion, Yamtar-I and Yamtar-II lines, which were obtained by selection by the breeder, showed no significant differences in fattening. Moreover, Yamtar-I have demonstrated better egg production and quality characteristics compared to the control group. These findings suggest that applying a conscious selection strategy could enhance commercial quail breeding potential.