الفهرس 
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Abstract
The present investigation oarried out to study
the effeot of seasonal ohanges on the rate of Meiotio
division iIIthe local Bala strain of rabbits.The
effect of seasonal variation on some fitness components
in Baladi and other imported breed,namelly Bouscat
,were also studied. The fitness oomponents were
litter size,body weight,viability,and gl:l3tationperiod.
The crosses between the two breeds i.e. Baladi and
Bousoat were oarried out and average body weight,
viability and sex ratio were recorded for the offspring.
The fitness components were estimated at different periods
of animal ages. The results obtained in this investigation
indicated that II
- The frequenoies of different meiotio stages indioated
that Paohytene, diplotene and diakinesis of prophase 1
reoorded the other stages • The metaphase I and anaphase
I of the first meiotic divisions and also metaphaseII and
anaphaseII of the second meiotio division were observed
in very low frequenceies.
2 - The frequenoies of the diffrent Meiotio stages showed
cosidrable reduotion in the different Meiotio stages showed
considerable reduction in the percentage of differeat
stages during the summer than the winter season.
mean litter size was generally: higher in Bousoat than in Baladi rabbits.