Supplementation with Xinjiang licorice extract in diets enhanced the growth performance and intestinal immunity of broilers.

On 42 d, the incorporation of XLE in the diet induced a highly significant increase in the serum CAT ( P < 0.001) and T-AOC ( P = 0.003) levels, along with a highly significant decrease in the MDA content in broilers ( P < 0.001). 3.6 Effects of XLE supplementation on the liver antioxidant capacity and immunoglobulin levels in broilers As shown in Table 10 , the addition of XLE to the diets significantly increased the contents of superoxide dismutase (SOD; P < 0.001) and the contents of T-AOC ( P < 0.001) in broiler livers, while also decreasing MDA content compared to the control group ( P = 0.035).

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