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This experiment was conducted to determine the effects of hatching egg weight and parental age on the hatching chick weight and sixth week of age live weight of Japanese Quail (Coturnix coturnix japonica). The first experiment was carried out with a total of 450 quail chicks hatched from three different egg weights groups (A, 11.0-11.9 g; B, 12.0-12.9 g; C, 13.0-13.9 g). In the second experiment, a total of 200 quail chicks hatched from eggs of two different age groups (22 and 65 wks of age) were used. As a result of the first experiment, average chick weights at the hatching and live weight of six weeks age were determined as 6.98, 7.56, 8.39 g and 178.16, 182.92, 181.32 g for A, B and C groups, respectively. There were significantly differences (P