A total of 1500 eggs (750 for each breed Fayourni (Fa) and Golden Montazah (GM)) was used to study the effect of different temperatures (optimum temperature 99.5°F to elevate 102.5°F or decreased to 96.5°F for 6 hours/ day) and lighting types (dark, normal and fluorescent) during incubation period on body weight, feed intake, feed conversion, rectal temperature, respiration rate, and semen quality. The results revealed that: I- The body weight of (GM) breed was always significantly higher than that of (Fa) breed (pS0.05) allover the experiment ages. The high temperature increased the overall mean body weight compared with the low temperature and control at 4,8 and 12 weeks of age. The fluorescent light treatment increased the average body weight compared with the control group at 4,8 and 12 weeks of age 2-Eggs exposed to high temperature or fluorescent light treatments during incubation, increased feed intake when compared with other treatments. The better-feed conversion was recorded for (Fa) control group when compared with its counterparts. As for (GM) strain, it could be seen that better feed conversion was noticed for high temperature group when compared with its correspondence. The differences in feed intake and feed conversion between all treatments were insignificant. 3-The effect of high temperature was decrease in rectal temperature of the two breeds at 2 weeks of age compared with the control treatment. The normal and /or fluorescent light had a higher overall mean rectal temperature compared with the control at 4,8 and 12weeks of age. 4-All treatments had increased respiration rate in the (GM) breed compared with the control at all ages except the high or low temperature at 12 weeks, which has a lower respiration rate. The 5-fluorescent light increased the overall mean respiration rate compared with the control treatment at all ages. 6-5. The high temperature during Incubation had a higher increase in life sperms % and a decrease in dead and abnormality sperm percentages in males of (Fa) and (GM) breeds. 7-In general, these results indicated that the fertile eggs exposed to high temperature or fluorescent light had a beneficial effect on body weight, feed conversion and semen quality in (Fa) and (GM) breeds.