Abstract
The aim of this study were to identify the effect of using of animals rumen contents as asource of protein instead of premix (protein concentrates) in productive performance of broiler chicks. Two hundred unsexed chicks (Cobb500) one day old divided to four groups (50 birds / group ) as follows : T1( Control) , T2 , T3 and T4 Replacement of 10 , 20 and 30% of rumen contents instead of premix . Chicks were reared until marketing age (42) days , food and water were supplied Ad Liblitum . Statistic analysis of data showed No significant differences (p≤ 0.05) in live body weight , average weekly weight gain , average food consumption and food conversion ratio for birds of control and those which fed on diets contained 10 and 20 % rumen content with premix .Significant decrease(p≤ 0.05) in that traits for birds fed diet contained replacement of 30% rumen content with premix. No significant differences(p≤ 0.05) in dressing percentage and mortality .
