TY - JOUR JF - JCPP JO - VL - 5 IS - 2 PY - 2001 Y1 - 2001/7/01 TI - Impact of Dietary Energy and Nutrients Concentration on the Performance of Arian Broiler Chicks TT - اثر غلظت انرژی و مواد مغذی جیره برعملکرد جوجه های آمیخته گوشتی آرین N2 - Two experiments were conducted to investigate the effect of dietary energy levels on the performance of Arian broiler chicks. Trial 1 was performed in summer and trial 2 in fall. Both experiments were accomplished in 5×2 factorial designs, involving 5 levels of dietary metabolizable energy and two sexes. Each of the 10 resulting treatments was replicated 4 and 3 times in trials 1 and 2, respectively. The metabolizable energy contents in diets number 1 to 5 were 2800, 2900, 3000, 3100 and 3200 Kcal/kg for starter (0-4 weeks) period and 2900, 3000, 3100, 3200 and 3300 Kcal/kg for grower (4-7 weeks) period, respectively. The ratios of energy to each nutrient were the same for all diets in each stage of the experiments. In both experiments, body weight gain and feed conversion ratio improved significantly (P SP - 125 EP - 135 AU - Zahiraddini, H. AU - Mirai Ashtiani, S.R. AU - shivazad, M. AU - Nikkhah, A. AD - KW - Broiler chicks KW - Dietary energy KW - Body weight increasement KW - Food intake KW - Economic performance. UR - http://jcpp.iut.ac.ir/article-1-192-en.html ER -