Effect of barberry juice in different amounts on production traits, blood parameters, length of villi, and depth of intestinal folds of broiler poultry

120 one-day-old broiler chickens of the Ras 308 commercial strain were randomly placed in 4 treatments including control, 1, 2 and 4 liters of barberry juice in 1000 liters of water. The length of the test period was 42 days, which included the initial period (from the 7th day to the end of the 21st day) and the growth period (from the 22nd day to the end of the 42nd day). According to the results, treatment 1 was associated with a decrease in fertilizer consumption, and treatments 2 and 3 were associated with an increase in fertilizer consumption compared to the control group, and this difference was significant only between treatments 1 and 3 (P<0.05). The best breeding performance with the lowest conversion rate was also obtained in treatment 1. Improvements in various parameters were observed in blood parameters, but the only significant factor was albumin values in treatment 3, which showed a significant decrease compared to the control group (P<0.05). In examining the length of the villi, all the treatments had a significant increase in the first 10%, and the highest increase was related to treatment 1 (P<0.05). Also, treatment 1 showed the highest significant value (P<0.05) in the depth of the leaves. It can be concluded that the use of 1 liter of barberry juice per 1000 liters of water in the poultry diet can have positive effects on weight gain and improve the performance of broiler chickens.