Effects of Long-Term Feeding of Lactobacillus reuteri on expression of Genes Related to Lipid Metabolism in Subcutaneous Fat and Liver of Pigs

  • TIAN Zhimei ,
  • CUI Yiyan ,
  • LU Huijie ,
  • YU Miao ,
  • LIU Zhichang ,
  • LI Zhenming ,
  • RONG Ting ,
  • MA Xianyong ,
  • MA Xinyan
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  • 1. Guangdong Engineering Technology Research Center of animal Meat Quality and Safety Control and Evaluation, Guangdong Provincial Key Laboratory of Animal Breeding and Nutrition, State Key Laboratory of Livestock and Poultry Breeding, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China

Received date: 2020-10-10

  Online published: 2021-05-14

Supported by

 

Abstract

This experiment was aimed to study effects of Lactobacillus reuteri 1 (LR1) on expression of genes related to lipid metabolism in subcutaneous fat and liver of pigs. A total of 144 cross-bred (Duroc×Landrace×Yorkshire) 21-day-old weaned piglets were randomly assigned to 3 groups, each group comprised 8 replicate pens with 6 pigs per pen. The diet in the control 1 group was a basal diet, the diet in the control 2 group was the basal diet supplemented with antibiotics, and the diet in LR1 group was the basal diet supplemented with 5×1010 CFU/kg LR1. The experiment period was 175 days. The results showed as follows:1) compared with the control 1 group, the relative expression levels of sterol regulatory element binding protein (SREBP), acetyl CoA carboxylase (ACC), fatty acid synthase (FAS), stearoyl CoA desaturase (SCD) and adipose triglyceride lipase (ATGL) genes in abdominal adipose in the control 2 group were significantly increased (P<0.05), but there were no significant difference in the relative expression levels of carnitine palmitoyl transferase 1 beta (CPT-1β), peroxisome proliferator-activated receptor alfa (PPARα), fatty acid transport protein-1 (FATP-1), peroxisome proliferator-activated receptor gamma (PPARγ) genes (P>0.05); the relative expression level of FATP-1 gene was increased significantly in LR1 group (P<0.05), and the relative expression levels of SREBP, ACC, CPT-1β, FAS, PPARα, SCD, PPARγ and ATGL genes had no significant different (P>0.05); the relative expression levels of SREBP, ACC and SCD genes in LR1 group were significantly decreased compared with the control 2 group (P>0.05). 2) Compared with control 1 group, the relative expression levels of SCD and ATGL genes in back fat was increased significantly in the control 2 group (P<0.05), and the relative expression level of SCD gene was decreased significantly in LR1 group (P<0.05); compared with control 2 group, the relative expression levels of ACC, FAS and SCD genes in the LR1 group were significantly reduced (P<0.05); compared with the control 1 and 2 groups, the relative expression level of PPARγ gene in backfat in LR1 group was significantly increased (P<0.05). 3) Compared with control 1 group, the relative expression levels of SREBP, ACC, FAS and SCD genes in liver in the control 2 group and LR1 group were significantly decreased (P<0.05), but the relative expression levels of CPT-1β, PPARα, FATP-1, PPARγ and ATGL genes had no significant differences (P>0.05). In conclusion, LR1 promotes fatty acids transport in subcutaneous fat and decreases anabolism of backfat and liver in pigs compared with antibiotics. Additionally, LR1 affects lipid transport and catabolism of liver in pigs.

Cite this article

TIAN Zhimei , CUI Yiyan , LU Huijie , YU Miao , LIU Zhichang , LI Zhenming , RONG Ting , MA Xianyong , MA Xinyan . Effects of Long-Term Feeding of Lactobacillus reuteri on expression of Genes Related to Lipid Metabolism in Subcutaneous Fat and Liver of Pigs[J]. Chinese Journal of Animal Nutrition, 2021 , 33(5) : 2907 -2917 . DOI: 10.3969/j.issn.1006-267x.2021.05.048

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