الفهرس 
MATERIALS AND METHODSOnly 14 pages are availabe for public view
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Abstract
The experimental work of this study was carried out at the Poultry Research Farm, Department of Animal Production, Faculty of Agriculture, Benha University, Egypt, started in March 2008 and terminated in October 2010. Number of 1500 eggs from White Leghorn and 300 eggs from Golden Montazah were chosen randomly and came from El-Takamoly chicken project, Alazab, El-Fayoum Governorate, Egypt. These eggs were incubated and hatched in the laboratory of Poultry Research Farm, Benha University, Egypt. The F2 chicken population was developed by crossing a broiler males of strain Golden Montazah (GM) with a layer females of White Leghorn breed (WL). A total number of 18 cockerels and 180 pullets were chosen randomly from the GM strain and WL breed, respectively. Each cock was mated with 10 hens housed in separately breeding pen to produce F1 crossbred (½GM½WL), consequently inter-se matings were practiced for two generations to produce F2 with the genetic structure of (½GM½WL)2. Also, purebreds from the two populations were produced. The pedigreed eggs from each individual breeding pen for the four mating groups, two foundations of GM and WL, two crossbreds of (½GM½WL) and (½GM½WL)2 were collected daily for fifteen days and then incubated. The studied traits were the phenotyping of growth, egg production and egg quality traits in the parental and F2 generations in such crossbreeding program. The F2 population was used to detect and localize QTL affecting growth and egg production and egg quality traits at different ages using specific microsatellite markers.