الخلاصة

Abstract As the field experiment designed to study the replacement of wheat fermented with Saccharomyces cerevisiae, Iraqi probiotic and rumen liquor with urea partially or completely replace corn in diets on the productive performance of broiler chickens as well as digest it conducted a second test after the end of the second field experiment. In this experiment, A 450 chicks were used and distributed over 10 treatments each with three replicates (15 chicks for replicate) treatments are: T1 and T2 partial and complete replacing of wheat without urea instead of corn, respectively (controls); T3 and T4 partial and complete replacing of wheat with urea instead of corn, respectively (controls); T5 and T6 partial and complete replacing of wheat fermented by Saccharomyces cerevisiae with urea instead of corn, respectively; T7 and T8 partial and complete replacing of wheat fermented by Iraqi probiotic with urea instead of corn, respectively; T9 and T10 partial and complete replacing of wheat fermented by rumen liquor with urea instead of corn, respectively. The current studies included the following results: T9 and T10 recorded the best percent of hemoglobin and packed cell volume as compared with control treatments. Six treatment was showed the best results in blood serum ELISA titer against for Newcastle disease, infection bursa disease, Avian influenza and Bronchitis.