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Acta Agriculturae Scandinavica, Section A - Animal Sciences
Year: 2010  |  Volume: 60  |  Issue: 3  |  Page No.: 151 - 158

Effects of Astragalus membranaceus on growth performance, carcass characteristics, and antioxidant status of broiler chickens

H. F. Wang, W. R. Yang, H. W. Yang, Y. Wang, Z. B. Yang, S. Z. Jiang and G. G. Zhang    

Abstract: An experiment was conducted using 720 one-day-old Arbor Acres broiler chickens to evaluate the effects of Astragalus membranaceus root powder (AMP), Astragalus polysaccharides (APS) on growth performance, carcass characteristics, and antioxidant enzymes, and metabolites of blood and liver in broiler chickens. The six dietary treatments included a control that was a corn-soybean meal basal diet; basal diet supplemented with 120 mg/kg antibiotic; 350 mg/kg APS; or 5000, 10,000, or 15,000 mg/kg diet of AMP. Supplementation of 10,000 mg/kg AMP increased average daily gain and feed conversion rate of broilers in grower period (22-42 d) and over the entire experiment compared to basic diet. Responses of antioxidant status to dietary APS and AMP varied depending on the age of the broilers. Beneficial effects of AMP on growth and feed utilization of broilers could be obtained by inclusion of AMP at the rate of 10,000 mg/kg diet.

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