Response OF Broiler Chicks TO Diets Containing Commercial Synbiotic product (Poultry Star) As Natural Feed Additive

Abstract

This experiment was conducted to study the effect of feeding broiler chicks on diets containing different levels of synbioticproduct (Poultry Star) which is combination of probiotic and prebiotic as natural feed additives on productive performance, carcass dressing percentage, subjectivemeat quality attributes andeconomical efficiency.The experimental design used in this experiment was the complete randomize design (CRD). Total number of 84, 7 day- old commercial un sexed, AborAcres strain broiler chicks, of approximately similar initial weight were randomly divided into 4 experimental groups with 3 replicates, each of 7 chicks. The first group (A) fed on basal diet without feed additive (control group). The other groups B, C and D were fed on basal diet supplemented with synbiotic at levels 500gm/ 1000gm/ 1500gm /ton respectively. The basal diet was formulated to meet the nutrients requirement of the broiler according to NRC, (1994). The experimental diets were fed for 6 weeks. Health of the stock and productive performance parameters were recorded. carcassdressing percentage and economical evaluation were calculated. The result indicated that, the chicks fed on the diet of 1500gm/ton had significantly(p<0.05) better Body weight gain when compared to the control group.No significant difference were observed among all treatment groups in feed intake, feed conversion ratio(FCR) , carcass dressing percentage and subjective meat parameters (tenderness, flavor, color, juiciness). The result showed that the control group exhibited significantly (p<0.05) higher mortality rate compared to synbiotic supplemented groups, whereas.no mortalities were observed in all treated groups with synbiotic. The economical evaluation showed that all values of dietarysynbioticwere economical feasible, but the values of profitability ratio (1: 50) of group D (1500gm/ton) was the highest of the test groups.