Effects of Cysteamine Chelated Zinc on Immunity Function, Antioxidant Capacity, Serum Biochemical Indexes and Intestinal Microflora of Finishing Pigs

  • YU Guanghui ,
  • WANG Yuqi ,
  • LIU Zhengfang ,
  • SONG Junlin ,
  • JIANG Jianyang ,
  • SONG Chunyang
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  • 1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
    2. Laiyang Municipal Bureau of Agriculture and Rural Affairs, Yantai 265200, China

Received date: 2019-09-25

  Online published: 2020-04-16

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Abstract

This experiment was conducted to investigate the effects of the supplemental levels of cysteamine chelated zinc (Zn-CS) on the immunity function, antioxidant capacity, serum biochemical indexes and intestinal microflora of finishing pigs. A total of 90 healthy finishing pigs with an average body weight of (64.67±1.15) kg were randomly allocated to 5 groups with 3 replicates of 6 pigs. The pigs in control group were fed a basal diet, and those in the experimental groups were divided into groups Ⅰ, Ⅱ, Ⅲ and Ⅳ, and fed the basal diet with different supplemental levels of Zn-CS (60, 90, 120 and 150 mg/kg). The results showed as follows:1) compared with the control group, the serum immune globulin A (IgA) content in groups Ⅰ and Ⅱ significantly increased (P<0.05). 2) Compared with the control group, the serum malondialdehyde content in groups Ⅲ and Ⅳ significantly decreased (P<0.05), and the serum total antioxidant capacity in groups Ⅱ, Ⅲ and Ⅳ significantly increased (P<0.05). 3) Compared with the control group, the serum growth hormone content in group Ⅱ significantly increased (P<0.05), the serum somatostatin content in group Ⅱ significantly decreased (P<0.05), and the serum insulin content in groups Ⅱ, Ⅲ and Ⅳ significantly increased (P<0.05). 4) At the level of phylum, the dominant flora with relative abundance of more than 1% of each group was Firmicutes, Proteobacteria and Bacteroidetes. At the level of genus, the dominant flora with relative abundance of more than 1% of each group was Clostridium, Enterobacteriaceae, Romboutsia, Turicion, Terrisporobacter and Actinobacillus. In conclusion, dietary supplemented with Zn-CS can promote the immunity function and antioxidant capacity. Under the conditions of the present experiment, the optimal supplemental level of Zn-CS in the finishing pigs' diet is 120 mg/kg.

Cite this article

YU Guanghui , WANG Yuqi , LIU Zhengfang , SONG Junlin , JIANG Jianyang , SONG Chunyang . Effects of Cysteamine Chelated Zinc on Immunity Function, Antioxidant Capacity, Serum Biochemical Indexes and Intestinal Microflora of Finishing Pigs[J]. Chinese Journal of Animal Nutrition, 2020 , 32(4) : 1891 -1898 . DOI: 10.3969/j.issn.1006-267x.2020.04.049

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