supplementation of clove essential oils and probiotic to the broiler’s diet on performance, carcass traits and blood components

this study was carried out to determine the effect of different levels of clove essential oil, as a natural growth promoter and probiotic on performance,carcass traits and serum components of broiler chickens. a total of 240 straight run day-old commercial broiler chicks (cobb 500) were distributed randomly into five groups. each group was subdivided into four replicates with 12 chicks each. the control diet, diet with probiotic protexin®, and diets supplemented with 150, 300 and 450 ppm clove essential oil were fed to the chickens. the results showed that from 11-22 days, feed intake (fi), and body weight gain (bwg) were increased significantly in control group compared to the other groups. however, from 23-42 d and 0-42 days of the experiment, feed intake (fi) and body weight gain (bwg) were increased significantly in broilers fed 450 ppm clove essential oil compare to those of control group (p