This experiment investigates the effects of Atractylodes macrocephala polysaccharides on the growth performance,nutrient apparent digestibility,and antioxidant capacity of protected pigs.400 binary(Changbai×Dabai)hybrid pigs with an average weight of 8.71±0.15 kg were randomly divided into 4 treatments,with 10 replicates per treatment and 10 pigs per replicate.They were fed with experimental feed supplemented with 0,120,240,and 480 mg/kg Atractylodes macrocephala polysaccharides(AP),respectively.The experiment included a 3-day preparation period and a 32 day main trial period.The results showed that the AP group at 480 mg/kg significantly increased the final weight of piglets by 2.86%,3.38%,and 2.41%(P＜0.05)compared to the other three groups,and the daily weight gain significantly increased by 5.11%,4.84%,and 3.61%(P＜0.05),respectively;Compared with the control group,the feed to meat ratio of the 480 mg/kg AP group significantly decreased by 5.59%(P＜0.05).The digestibility of DM in the AP group of 240 and 480 mg/kg significantly increased(P＜0.05),while the digestibility of CP and energy in the AP group of 480 mg/kg significantly increased(P＜0.05).Serum:The T-AOC and GSH Px activities were significantly increased(P＜0.05)in the AP groups at 240 and 480 mg/kg,while the CAT activity was significantly increased(P＜0.05)and the MDA content was significantly decreased(P＜0.05)in the AP group at 480 mg/kg;Muscle:The T-AOC and CAT activities were significantly increased(P＜0.05)and the MDA content was significantly decreased(P＜0.05)in the AP groups at 240 and 480 mg/kg.Conclusion:Under the conditions of this experiment,480 mg/kg of Atractylodes macrocephala polysaccharide promotes the growth performance of piglets by enhancing their digestion,absorption,and antioxidant capacity.
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