الفهرس 
Body Weight and Measurements asOnly 14 pages are availabe for public view
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Abstract
In the North Western Coastal Desert of Egypt, Barki
sheep are considered the predominant breed in the area
and constitute about one third of the sheep population
in Egypt. Keeping sheep represents a main part of the
income of the inhabitants of that zone.
Barki breed is well adapted to the harsh prevailing
conditions including poor feeding, heat stress and
disease and its production is rather low. Barki sheep
are characterized by long limbs, small body weight and
open fleece to fit in the desert environment, i.e. vast
areas with sparce vegetation and long hot dry summers.
Size of sheep has a direct relationship with feeding
requirements on one side and productivity on the other.
There is a reasonable amount of information of the
relationship of feeding requirements and sheep size.
Maintenance requirement of an animal is proportional to
metabolic body weight and represents almost 80% of its
total requirements (Owen, 1981). In order to reduce
maintenance requirements and consequently feed costs,it
is desired to keep flocks with small ewe size which mate
to ram characterized by high growth rate. Though, productivity
may increase with ewe size full information on
the relationship between ewEc> size and productivity seans to be lacking in local breeds. Thus, the main objective of
the present study is to throw some light on the relationship
between ewe size and productivity in sheep and
to estimate genetic parameters for different productive
traits to help in planning breeding programmes.
This thesis includes two 1main items, firstly an
experimental work to define more clearly ewe size,
secondly study of ewe size in relation to its productivity