Effect of Anise oil extract, probiotic (protexin)and antibiotic (virginiamycin)in diets (based on wheat) on performance and carcass characteristics of broiler chicks

An experiment was conducted under completely randomized design to study the effect of two levels of Anis Oil Extract (AOE), probiotics and antibiotic on performance, immune system and blood biochemistry of broiler chicks. 1200 day old Arian chicks were randomly distributed into five experimental diets with four replicates (each replicates consist of 60 birds) with feed and water ad libitum for 42 days. The experimental diets were as follows: 1-Basal diet (without feed additives), 2- Basal diet AOE at the level of 0.2g/kg feed, 3- Basal diet AOE at the level of 0.4g/kg feed, 4- Basal diet antibiotic(virginiamycin) at the level of 20ppm/kg feed, 5- Basal diet probiotics (Protexine) at the level of 0.5g/kg feed. Performance of birds (body weight, feed consumption and feed efficiency). As the result was revealed, feed additives were not affected significantly on body weight through out the experimental period. Birds Performances, production index and birds survivability and carcass characteristics did not show any significant by supplementations of feed additives throughout the experimental periods. Abdominal fat percentage was affected significantly by feed additives in the diets (p