The Effect of Nutrition Systems and Exchange of Diets on Some Productive Performance of Broilers

This study is conducted at the poultry farm College of Agriculture - University of Muthanna from 28/2/2013 until 3/4/2013 to study the effect of nutrition systems and exchange of diets on some productive performance of broilers. Three hundred broiler chicks(Ross),are a day old. are used in this experiment The birds are distributed to three treatment groups with four replicates per treatment (100 birds per treatment). The treatment groups are as follows: 1. First Treatment; Three diets are given to the birds starter diet for the(1-15 days), grower diet for the (16-28 days) and finisher (29-35 days). 2. Second Treatment: Two diets are given to the birds starter diet for the (1-21 days) and finisher diet for the (22-35 days). 3. Third Treatment: One diet were given to the birds for the whole period of age (1-35 day) The results show a significant increase (P ≤ 0.05) in live body weight, weight gain, feed conversion ratio, production index and dressing percentage were recorded for the broiler supplemented with three diets given are to birds (First Treatment)as compared with third treatment (One diet given to birds). The third treatment has a significant increase (P ≤ 0.05) in the same traits as compared with the second treatment