الفهرس 
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Abstract
The present study and field measurements were carried out at broiler farms in Menoufia Governorate (Sadat City, El Khatatba, Ashmone, KafrDawod and Menouf) during the period on 2016 and 2017.
The great object of this study was to determine the effect of some environmental factors (such as type of farms, density and in addition to strains effects) on production and economical efficiency of broiler in MenoufiaGovernment.Three densities were applied in open system the first was 12 birds/ square meter, the second was 13 birds/m2 and the third was 14 birds/m2. But in closed system four densities were applied (12, 13, 14 and 15 birds/m2). All birds were reared on deep litter with expansive floors.
The followingtraits were studied
(Body weights, Growth rates, water and feed consumption, meat production traits and economic environmental of meat production)