China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (9): 3264-3272.doi: 10.16431/j.cnki.1671-7236.2021.09.017

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effects of Jujube Polysaccharide on Growth Performance and Immune Indexes of Immunosuppressive Egg-type Chicks

GUO Linxia1, MA Kewei2, FENG Zhihua1, LIU Yanci2, LIU Guanzhong1, LI Qingyan3, GONG Sumei3, LI Shupeng3, ZHAO Guoxian1   

  1. 1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China;
    2. Baoding Vocational and Technical College, Baoding 071000, China;
    3. College of Veterinary Medicine, Hebei Agricultural University, Baoding 071000, China
  • Received:2021-02-18 Online:2021-09-20 Published:2021-09-17

Abstract: In order to study the effect of Ziziphus jujuba polysaccharide (ZJP) on the growth performance and immune indexes of immunosuppressive egg-type chicks, nine hundred one-day-old Jinghong No. 1 egg-type chicks of healthy and similar body weight were randomly divided into 6 groups with 6 replicates in each group and 25 chickens in each replicate. Group Ⅰ was blank control group, fed with basal diets. The immunosuppressive model was established by injecting 100 mg/(kg·BW) cyclophosphamide once a day at 7-9 days old in groups Ⅱ-Ⅵ, the basic diets were supplemented with 600 mg/kg Astragalus polysaccharides (APS) and 0, 400, 800 and 1 600 mg/kg ZJP, respectively. The trial period was 6 weeks. The results showed that ZJP could significantly alleviate the decrease of body weight at 42 days old, average daily gain at 22-42 days old and 1-42 days old, thymus and bursa index, polymeric immunoglobulin receptor, secretory immunoglobulin A (sIgA) and serum immunoglobulin A (IgA) and IgG, and the increase of F/G at 22-42 days, and the F/G and IgA and IgG reached the level of APS group. Under the conditions of this experiment, adding appropriate level of ZJP to the basal diet could improve the growth retardation and immune dysfunction caused by cyclophosphamide in varying degrees.

Key words: Ziziphus jujuba polysaccharide; egg-type chicks; immunosuppression; growth performance; immune indexes

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