اثرات آویشن‌، مرزه با و بدون آنزیم بر عملکرد، فراسنجه های خونی و ایمنی در جوجه های گوشتی

This experiment was conducted to assess the effects of using Thyme, Saturea, medicinal plants with or without enzyme on performance, blood parameters in broiler chickens. This experiment was conducted in a completely randomized design with 480 broiler (Ross-308) in 8 treatments and 3 replicates (n=20) for starter (1-21 days) and grower period (21- 42 days). The experimental diets contained: 1, Control (basal diet); 2, Containing 1% Thymus; 3, containing 1% Saturea; 4, Containing 0.05% enzyme; 5, using of 0.5% Thymus + 0.5% Saturea; 6, 1% thymus + 0.05% enzyme; 7, 1% Saturea + 0.05% enzyme); 8, 0.5% Thymus + 0.5% Saturea+0.05% enzyme. The results of this experiment showed that thyme and saturea and enzyme supplementation significantly increased the amount of  body weight gain, and improved feed conversion ratio in grower (21-42 days) and whole period (0-42 days), in comparison to control diet (P<0.05). The feeding of combination of thyme and Saturea, and enzyme supplementation decreased fat abdominal, in comparison to treatment four (P<0.05). Furthermore, the using of treatment 3, 4, 5 and 8 significantly decreased the concentration of total protein in comparison to control group (P<0.05). Concentration of cholesterol, triglyceride, albumin, and uric acid were not significant between different groups. The lowest percentage of hetrophyle and proportion of heterophyle to lymphocyte observed in group containing Thyme, Saturea and enzyme (P<0.05). It could be included that supplementation of diet with 0.5% Thyme, Saturea, and multi enzyme has positive effects on performance, immune system and in abdominal fat reduction in broilers.