The attributions related to incubation and production performance of 2 parent stocks are compared in this study. One of these stocks was chosen from a parent stock (ROSS 308) in Hatay region of Turkey in the name of synthetic group. The eggs were gathered from the both stocks in the age of 32-week, at first they were transmitted into incubator and then to saloons. At the end of this period, the incubation attributions (spermatogenesis, incubation efficiency and hatching) of 2 groups showed no significant differences (p>0.05).The live weight comparison of original stock to synthetic one showed significant differences after the first week (p<0.05) from performance or efficiency of growth period points. Also, there was significant difference from feed conversion (FCR) points (p<0.05) and the original stock had a better FCR. Durability of original stock is 4% higher than synthetic stock.
