THE EFFECT OF REDUCTION CONCENTRATIONS OF THE BROILER CHICKENS PER UNIT AREA ON THE FINAL LIVE WEIGHT AND PRODUCTION ECONOMICS

摘要

The aim of the present study was a mathematical and statistical assessment for the effect of concentration of broiler chickens per unit area to the final live weight and production economics. Cobb 500 chickens were fattening for 42 days in a hall on deep litter. During the two experiments the chickens were divided to two groups according to concentration per unit area and it was about 30 and 25 kg/m2. The experiments had been complied with recommended nutritional requirements for breeding and final fattening type of chickens Cobb500. The average final weight of broiler chickens in the first experiment were 2.14 and 2.17 kg for concentrations of 29.41 and 25.76 kg/m2 respectively, and for the second experiment were 2.01 and 2.02 kg for concentrations of 29.33 and 23.90 kg/m2 respectively. According to statistical analysis (P≥0.05), the average final live weight of broiler chickens was not affected by concentrations. The calculated production total live weight of broiler chickens across the halls were 48526.5, 48 394.5, 42504.0 and 39435.0 kg at a concentrations of 29.41, 29.33, 25.76 and 23.90 kg/m2 respectively. By reducing the concentration of birds in the hall from 29.41 to 29.33 kg/m2 and from 25.76 to 23.9 kg/m2 the total production of broiler chickens was decreased by 6022.5 and 8959.5 kg live weight respectively. The concentration of birds per unit area of ??25.76 and 23.90 kg/m2 lead to lower the price of the product of broiler chickens by 4745.73 and 7060.09 € respectively, compared with the price for the product of the concentrations of 29.41and 29.33 kg/m2 respectively.