RESEARCH PAPER

Effects of Dietary Lycium barbarum Polysaccharide on Nutrient Apparent Digestibility, Energy Metabolism, Nitrogen Metabolism and Serum Immune Indices of Lambs

  • JU Hao ,
  • HAO Xiaoyan ,
  • ZHANG Xuanzi ,
  • LIU Sen ,
  • ZHANG Hongxiang ,
  • XIANG Binwei ,
  • ZHANG Jianxin
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  • 1. College of Animal Science, Shanxi Agricultural University, Jinzhong 030801, China;
    2. Shanxi Xianghe Lingshang Agriculture and Animal Husbandry Development Co., Ltd., Youyu 037200, China;
    3. Youyu County Modern Agricultural Development Service Center, Youyu 037200, China

Received date: 2022-05-31

  Online published: 2022-12-15

Abstract

This experiment was conducted to investigate the effects of dietary Lycium barbarum polysaccharide on nutrient apparent digestibility, energy metabolism, nitrogen metabolism and serum immune indices of lambs. Forty-eight 4-month-old Dorper×small-tailed Han sheep crossbred male lambs with similar body weight[(18.90±0.76) kg] were randomly divided into 4 groups with 12 lambs in each group. Lambs in 4 groups were fed the basal diets supplemented with 0 (control group), 0.1% (0.1% LBP group), 0.3% (0.3% LBP group) and 0.3% (0.5% LBP group) Lycium barbarum polysaccharide, respectively. The pre-experimental period lasted for 15 days, and the experimental period lasted for 75 days. The results showed as follows:1) the apparent digestibility of dry matter (DM), crude protein (CP) and organic matter (OM) of 0.3% LBP group was significantly higher than that of the control group (P<0.05). 2) The digestive energy of 0.3% LBP group was significantly higher than that of the control group (P<0.05). The metabolizable energy and metabolizability of gross energy of 0.1% LBP group, 0.3% LBP group and 0.5% LBP group were significantly higher than those of the control group (P<0.05). 3) The digestible nitrogen and nitrogen apparent digestibility 0.3% LBP group were significantly higher than those of the control group (P<0.05). The retained nitrogen and nitrogen deposition rate of 0.1% LBP group, 0.3% LBP group and 0.5% LBP group were significantly higher than those of the control group (P<0.05). 4) The urinary uric acid content of 0.1% LBP group, 0.3% LBP group and 0.5% LBP group was significantly higher than that of the control group (P<0.05). 5) The contents of immunoglobulin A (IgA) and immunoglobulin M (IgM) in serum of 0.3% LBP group and 0.5% LBP group was significantly higher than that of the control group (P<0.05). In conclusion, dietary appropriate amount of Lycium barbarum polysaccharide can improve the apparent digestibility of DM, OM and CP, of lambs, and enhance the immunity. Under these experimental conditions, the dietary optimal supplemental level of Lycium barbarum polysaccharide is 0.3%.

Cite this article

JU Hao , HAO Xiaoyan , ZHANG Xuanzi , LIU Sen , ZHANG Hongxiang , XIANG Binwei , ZHANG Jianxin . Effects of Dietary Lycium barbarum Polysaccharide on Nutrient Apparent Digestibility, Energy Metabolism, Nitrogen Metabolism and Serum Immune Indices of Lambs[J]. Chinese Journal of Animal Nutrition, 2022 , 34(12) : 7960 -7969 . DOI: 10.3969/j.issn.1006-267x.2022.12.044

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