China Animal Husbandry and Veterinary Medicine ›› 2024, Vol. 51 ›› Issue (3): 1086-1093.doi: 10.16431/j.cnki.1671-7236.2024.03.020

• Nutrition and Feed • Previous Articles    

Effect of Catalase on the Production Performance,Antioxidant Capacity, Cecal Microbe and Metabolites in Broilers

ZHANG Wenxiang1, WANG Jianping2   

  1. 1. Supervision Institute of Animal Health of Gushi County, Xinyang 465200, China;
    2. College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
  • Received:2023-08-29 Published:2024-02-27

Abstract: 【Objective】 The effect of catalase (CAT) on the production performance,antioxidant capacity,cecal microbe and metabolites in broilers was investigated in this study,for providing theoretical foundation in the application of CAT in animal production.【Method】 600 1-day-old Yellow Feathered broiler chickens were selected and randomly divided into 5 groups:Blank control group (CON),antibiotic group (Anti),and low,medium and high-dose CAT groups (CAT1,CAT2 and CAT3),with 6 replicates in each group and 20 chickens in each replicate.Among them,CON group was fed with basic feed,Anti group added 50 mg/kg chloramphenicol to the basic diet,and CAT1,CAT2 and CAT3 groups were supplemented with 100,150 and 200 U/kg CAT in the basic diet,respectively.The feeding trial lasted for 42 d.After the experiment,the production performance was measured,and serum and cecal chyme were collected for measuring antioxidant indicators,microbial communities and metabolite content.【Result】 Compared with CON group,the ADG and ADFI of each dose group of CAT were significantly increased (P<0.05),reaching the level of the Anti group.However,increasing the CAT dose did not further improve these indicators.Compared with CON group,the serum CAT and superoxide dismutase activities were significantly increased in all dose groups of CAT and Anti group (P<0.05).The levels of malondialdehyde,protein carbonyl and 8-hydroxydeoxyguanosine were significantly reduced (P<0.05),and the 8-hydroxydeoxyguanosine levels in all dose groups of CAT were consistent with those in Anti group.Cecal microbiota analysis showed that compared with CON group,the number of Proteobacteria,Lactobacillus and Faecalibacterium in each dose group of CAT significantly increased (P<0.05),but the number of Clostridium decreased significantly (P<0.05).Compared with CON group,the levels of lactic acid,acetic acid and isovaleric acid in the cecal contents of each dose group of CAT were significantly increased (P<0.05),while the content of valeric acid was significantly reduced (P<0.05);The levels of methylamine,tryptamine,putrescine,cadaverine,and total amine in each dose group of CAT were significantly reduced (P<0.05);The levels of spermidine were significantly reduced in CAT2 and CAT3 groups (P<0.05),and a comparative analysis of CAT dose effects showed that the levels of putrescine,cadaverine and total amine in CAT2 and CAT3 groups were significantly lower than those in CAT1 group (P<0.05).【Conclusion】 Adding 150 or 200 U/kg CAT to feed could promote animal growth and health.

Key words: broiler; catalase; production performance; antioxidant capacity; cecal microbe

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