›› 2018, Vol. 45 ›› Issue (12): 3447-3454.doi: 10.16431/j.cnki.1671-7236.2018.12.017

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Effects of Astragalus Polysaccharides and Clostridium butyricum on Growth Performance and Serum Biochemical Indexes of Ducklings

ZHAO Wenwen1,2, WANG Lei1, YUAN Wenhua1,2, TIAN Yong2,3, CHEN Bindan4, DIAO Xinping1, LU Lizhi2,3   

  1. 1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China;
    2. Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310000, China;
    3. Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture of China, Hangzhou 310021, China;
    4. Zhejiang Zhuji Guowei Poultry Industry Development Co., Ltd., Hangzhou 311800, China
  • Received:2018-06-11 Online:2018-12-20 Published:2018-12-21

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Abstract:

This experiment was conducted to investigate the effects of Astragalus polysaccharides,Clostridium butyricum and their combination on growth performance,serum biochemical indices of ducklings.A total of 600 one-day-old healthy Shaoxing male ducklings with the similar body weight were randomly arranged into 5 groups with 6 replicates per group and 20 ducklings per replicate.The ducklings in the group Ⅰ (control group) were fed with a basal diet,and that in groups Ⅱ,Ⅲ,Ⅳ and Ⅴ were fed with the basal diets supplemented with 40 mg/kg of bacitracin (antibiotic group),800 mg/kg Astragalus polysaccharide,250 mg/kg Clostridium butyricum and 800 mg/kg Astragalus polysaccharide+250 mg/kg Clostridium butyricum,respectively.The experiment lasted for 28 d.The results showed as follows:①At 1 to 14 days of age,there were no significant differences of ADG,ADFI and F/G between the control group and the test groups (P>0.05).At 15 to 21 days of age,compared with groups Ⅰ and Ⅱ,the ADG of groups Ⅲ,Ⅳ and V was significantly increased (P<0.05),and F/G was significantly reduced (P<0.05).At 22 to 28 days of age,the ADG of groups Ⅲ,Ⅳ and V was significantly increased than that in group Ⅰ (P<0.05),the ADFI of group V was significantly higher than other groups (P<0.05),while F/G of groups Ⅲ,Ⅳ and V was significantly reduced than that of groups Ⅰ and Ⅱ (P<0.05).At 1 to 28 days of age,compared with groups Ⅰ and Ⅱ,the ADG of groups Ⅲ,Ⅳ and Ⅴ was significantly increased (P<0.05),and F/G was significantly decreased (P<0.05).② At 28 days of age,compared with group Ⅰ,the serum T3 content in group Ⅴ,T4 and GH contents in groups Ⅲ and Ⅴ were significantly increased (P<0.05).There was no significant difference of CORT content among groups (P>0.05).The IL-2 content in groups Ⅳ and Ⅴ were significantly improved compared with groups Ⅰ and Ⅱ (P<0.05).The IFN-γ content of the groups Ⅲ and Ⅴ was significantly higher than other group (P<0.05).In conclusion,the addition of Astragalus polysaccharides and Clostridium butyricum in diets could improve the growth performance and serum biochemical indexes of ducklings,and their combined effect was better than the single one.

Key words: Astragalus polysaccharide; Clostridium butyricum; growth performance; serum indexes

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