China Animal Husbandry and Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (5): 1987-1998.doi: 10.16431/j.cnki.1671-7236.2025.05.005

• Nutritionand Feed • Previous Articles    

Effects of Dietary Superoxide Dismutase Supplementation on Growth Performance, Immune Performance,Antioxidant Capacity and Intestinal Function of Broilers

ZHANG Guanfeng1, SONG Xianfan2, YAN Zhaoming1, YANG Xiaojin3, ZHENG Mengli1, LIU Yating1, CHEN Qinghua1   

  1. 1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
    2. Hunan Debang Animal Husbandry Co., Ltd., Changsha 410000, China;
    3. Luoyang Ouke Baike Biotechnology Co., Ltd., Luoyang 471611, China
  • Revised:2024-11-20 Published:2025-04-27

Abstract: 【Objective】 This experiment was conducted to explore the effects of dietary superoxide dismutase (SOD) on growth performance,immune performance,antioxidant capacity and intestinal function of broilers,so as to provide reference for the application of SOD in livestock and poultry.【Method】 A total of 300 one-day-old Arbor Acres (AA) male broilers were randomly divided into 5 groups with 6 replicates per group and 10 broilers per replicate.Broilers in control group were fed the basal diet,and broilers in groups A,B,C and D were fed the basal diet supplemented with 100,200,400 and 800 mg/kg SOD,respectively.The trial period was 42 days.The feed intake of broilers was recorded every day.At the ending of the feeding trial,one broiler was randomly selected from each replicate,and weighed after 12 h of water supply and fasting.The immune organs,blood,liver and intestinal samples were collected to determine the growth performance,immune performance,antioxidant capacity and intestinal function indexes of broilers.【Result】 Compared with control group,①The feed to gain (F/G) of broilers aged 1-21 days in group B was significantly decreased (P<0.05).②The thymus index and bursa of Fabricius index of broilers in groups A-D showed an increasing trend,but the difference was not significant (P>0.05).The spleen index of broilers in groups B and C was significantly increased (P<0.05).③There was no significant difference in serum immunoglobulin A (IgA) content of broilers in groups A-D (P>0.05),but the contents of IgG and IgM in serum of broilers in group B were significantly increased (P<0.05).④The total antioxidant capacity (T-AOC),glutathione peroxidase (GSH-Px) and total superoxide dismutase (SOD) in serum,and T-AOC and SOD activities in liver of broilers in groups B and C were significantly increased (P<0.05),and the malondialdehyde (MDA) content in serum and liver was extremely significantly decreased (P<0.01).The activities of GSH-Px and catalase (CAT) in liver of broilers in group B were significantly increased (P<0.05).The MDA content in serum of broilers in group D was significantly increased (P<0.05).⑤The length of duodenum and jejunum and the weight of duodenum of broilers in group B were significantly increased (P<0.05).The trypsin activity in duodenum and jejunum of broilers in groups B and C were significantly increased (P<0.05).【Conclusion】 Under the conditions of this experiment,adding 200 mg/kg SOD to diet could improve the antioxidant capacity,immunity,intestinal function and 1-21 days old growth performance of broilers.

Key words: superoxide dismutase; broilers; growth performance; immune function; antioxidant capacity; intestinal function

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