EVALUATION OF MEAT PRODUCTION PERFORMANCE IN BOTH CLOSED AND OPEN SYSTEMS IN ELMENOUFIA GOVERNORATE

ABSTRCT: The present study and field measurements were carried out at broiler farms in Menoufia Governorate (Sadat City, El Khatatba, Ashmone, Kafr Dawod and Menouf) during the period in 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 Menoufia Governmente.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 studied traits were ( Body weights, growth rates, water and feed consumption, meat production traits and economic environmental of meat production. The most important results were: 1stocking densities 15/m2 in closed system produced meat production were higher than other densities, (28.20 kg/m2). In open system, the stocking densities of 14/m2 produced more meat production (29.06 kg/m2). 2Also, Arbor Acre strain realized were more meat production as 27.22 kg/m2, while they were 26.57 kg/m2 for Cobb and 26.13 kg/m2 for Avian. 3In addition, closed system was more efficient in most traits where birds have higher body weight at 28 days, consumed less feed till 28 days of age and lower water consumption. 4These results indicated that the production cost per kg was higher in open system than closed system.