Abstract:
This experiment was conducted to study the effect of feeding broiler chicks on diets containing yeast Saccromyces Cerevisiae (Sc) in comparison with enzyme (Hamecozyme) as a natural feed additive in productive performance, carcass dressing percentage. The experimental design was used in this experiment Complete Randomized Design (CRD). Total number of 63 chicks at 7 days old, unsexed Aberecar strain broiler chick’s approximately similar initial weights (120gm) randomly divided in to 3 experimental groups with 3 replicates each of 7 chicks. The first group (A) fed on basal diet without feed additive (control group), the second group (B) fed on basal diet with enzyme (Hamecozyme) and third group (C) fed on basal diet supplemented with live yeast (Sc) at level 0.3%.The basal diet was formulated to meet the nutrients requirement of broiler according to Department of Animal Production, College of Agricultural Studies, Sudan University of Science and Technology. The experimental diet duration was 5 weeks. Average weights gain, feed intake and FCR dressing percentage, non carcass component (liver, gizzard, and chemical analysis of blood samples serum parameters were use are criteria of response. Economics for each group was calculated at the end of experimental period. Results showed significant between groups in performance parameters, dressing percentage, non carcass component and chemical analysis of blood serum. The results indicated that the live yeast (Sc) supplemented groups has significantly (P>0.05) better body weight gain and feed conversion ratio than control group and enzyme (Hamecozyme) while the feed intake and carcass dressing percentage were not significantly affected by the dietary treatments. In experimental period generally was not recorded mortality rate through the experimental period. The live yeast 0.3% obtained the high total profit compared to other tested groups.
