الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Life-time performance of the ewe is the ultimate
indicator of her utility in the flock since it takes account
of the stayability of the ewe in the flock and possible
trade-offs between performances in consecutive seasons.
Life-time performance is also important in investigating
flock economics.
Very few studies have been made to estimate life-time
performance of the ewe and factors affecting it in Egyptian
breeds of sheep.
This investigation was carried out to estimate life-time
lamb and ~mol production of e\~es from Ossimi and Rahmani
breeds, genetic and environmental factors influncing it and
its genetic and phenotypic relationship vlith the ewe weight
early in her life as well as her mature WIteight.