The aim of this work was to study the efficacy of AGP alternatives supplementation in the diet on broiler performance, intestinal morphology, cecal microbiota and carcass traits. Three hundred seven-day old broiler chicks (cobb500), un-sexed of 160gm average body weight, were randomly divided into five experimental treatments and three replicates per treatment group. Antibiotic and Coccidiostate-free commercial diets cover the broiler recommendation during each growth phase were used. Each group was fed on one of the following experimental diets: TC- basal diet (control), COA-basal diet + Coated Organic Acids Mixture 750gm/Ton, OA- basal diet + Organic Acids Mixture 750gm/Ton, (EO)-basal diet + Encapsulated blend of Essential oils 100gm/Ton, PRO-basal diet + Probiotic 500gm/Ton.
At 42 days results revealed that, supplementation of broiler diets with COA and EO led up to insignificant numerical increase in BWG by 3 and 1.9 % , respectively compared with the control group. There were insignificant numerical improvement in CFCR by 6.4, 2.46, 5.4 and 4.43% for COA, OA, EO and PROgroups, respectively. Supplementation of broiler diets with COA vs.OA improved BWG and FCR by 5 and 4%, respectively. Treatments had no effects on dressing percentage and meat yield At 42 days of age, all AGP alternatives supplementation tended to increase the number of Enterrococci and lactic acid bacteria group and to decrease the numbers of E. coli group in compared with the control group. However, the Cecal digesta pH tended to be similar in treated birds in compare with control group. At 42 days of age, birds fed OA diets had the longer and wide jejunum villi (the height and the area of the villi increased by 17 % and 23.3%, respectively) deeper crypts (increased by 26.6%) and lower jejunum mucosal layer thickness (39.1 % lower) in compared with control group.Broilers fed diets supplemented with COA, EO and PRO tend to improve PCR by 6.5, 5.6 and 4.79, respectively and EPEF by 12.0, 9.5 and 1.74% in compared with those fed the control diet.