الفهرس 
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Abstract
This experiment was carried out at the Poultry Farm, Faculty of
Agriculture, Minufiya University, Shebin El-Kom, Egypt. The
experiment continued for four generations, (G0,G1, G2 and G3),
through the hatching seasons 2010-2011 and 2011 - 2012.
The aim of the experiment was to study the genetic improvement
of some economic traits during the growth period in Quail population.
Also, to increase body weight in different growth periods for
increasing meat production in Quails, and at the same time, improving
feed efficiency during growth period (28 – 56 days).
The rate of selection response per generation for body weight at 8
wks were 17.5 (g / G). The rate of selection response for feed
efficiency per generation was -0.12 g.
In general this study obtained the possibility of directly
improvement of body weight at 8 weeks of age and feed efficiency
at (4- 8 wks) by using independent culling level in Quail populations.