الفهرس 
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Abstract
Feed restriction affected the live body weight of high weight Japanese quail. The
group had the highest body weight followed by HWR2. The body weight at 2
’was 85.3 and 92.4 grams for HWFF and HWR2 respectively, at 4 weeks the body
I was 202.6 , 165.1 , and 199 grams, and it was 243, 206.9 , and 233.3 grams for
,HwR2 and HWR4 at the 7th week respectively . Feed consumption increased
’cantly with age till the 6th week in case of HWFF. Feed restriction also affected the
ebody weight of both males and females, it was 97.6 and 130.9 grams for males and
females RI respectively. For HWFF it was 241.6 and 287.6 for males and females
lively, for HWR2 it was 191 and 252.9 and it was 207.8 and 260 grams for HWR4
and feniales respectively. Also feed restriction affected the percentage of mortality
dill’ing rearing and laying periods, the highest mortality was for HWFF group, it was
°’0 and 50 % during rearing and laying respectively.
The daily egg production and the percentage of doupled yolk and soft shelled. The
stdaily egg production was for RI and there was no significant difference between the
high weight groups. The HWR2 had the lowest percentage of doupled yolked eggs 7.4
me percentage of soft shelled was 5.7 %. Fertility and hatchability affected by feed
clion , the highest percentage was 21.8 and 20 % respectively, and the percentage
bility was 66.4 and 62.4 percentage for R I and HWR2 respectively, but it was
in case ofHWFF and HWR4. Fertility and hatchability increased with age in RI but
rreased in case of HW line. Hatchability percentage decreased with age in all lines.
Feed restriction also improved the sexual activity of high weight males and those feed
led had a higher percentage of completed matings than those ad libitum ( 8.9 , 7.8 in
HWR2 and HWR4 groups vs 5.4 in the HWFF group). The HWFF males had a
r number of attempts and the lowest number of completed matings than the HWR2 ,
4 group, and RI line . The percentage of completed matings were highest for R 1and the lowest was HWFF. The HWFR2 group was better than the HWR4 group.