Figure 2.

Effect of dietary treatments on serum levels of total protein, albumin, and globulin. Values are mean ± standard error (SE), n = 8 chicks per treatment (1 bird/replicate). NC: negative control group = commercial feed, no additives by cinnamon powder; PC: positive control group = commercial feed, treated by antibiotic Colimox powder (mixture of amoxicillin and colistin at 200 and 150 mg/kg, respectively); 2000, 4000, and 6000 mg/kg treated groups = commercial feed, treated by Cinnamon verum powder. ^a,b It indicates significant differences (p < 0.05) in serum total protein, albumin, and globulin compared with each CN level to the non-supplemented control diet.