TY - JOUR T1 - Effect of Energy Level and Time of Feed Replacement from Starter to Finisher Diets of Broilers Weighted Less than Two kg TT - اثر میزان انرژی و زمان تعویض جیره‌های پیش‌دان به پس‌دان بر عملکرد تولیدی جوجه‌های گوشتی با وزن کمتر از دو کیلوگرم JF - JCPP JO - JCPP VL - 7 IS - 3 UR - http://jcpp.iut.ac.ir/article-1-451-en.html Y1 - 2003 SP - 153 EP - 161 KW - Broiler KW - Time of feed replacement KW - Starter KW - Finisher KW - Metabolizable energy. N2 - An experiment with a 33 factorial arrangement in a completely randomized design with 450 day-old broilers was conducted to study the effect of energy level and time of change from starter to finisher diets on performance and economic aspects of broilers. Broiler chickens were fed at three levels of dietary energy (2800, 3000, and 3200 KcalME/Kg) from 1-42 days of age. Starter and finisher diets were changed at 16, 21, and 26 days of age and then finisher diets were fed up to 42 days of age. The effect of diet energy and changing time from starter to finisher diets on body weight and feed conversion at 26 days of age were significant (P M3 ER -