RESEARCH PAPER

Effects of Lactobacillus plantarum on Lipid Metabolism and Antioxidant Function of Pekin Ducks

  • AN Keying ,
  • GAO Wenwen ,
  • LI Lei ,
  • XIA Zhaofei
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  • College of Veterinary Medicine, China Agricultural University, Beijing 100193, China

Received date: 2022-05-09

  Online published: 2022-12-15

Abstract

This experiment aimed to investigate the effects of Lactobacillus plantarum on lipid metabolism and antioxidant function of Pekin ducks. One hundred and eighty 1-day-old Pekin ducks were randomly allocated to 3 groups with 6 replicates per group and 10 ducks per replicate. Ducks in the control group were fed a basal diet, and others in experimental groups were fed basal diets supplemented with 400 (LP1 group) and 800 mg/kg Lactobacillus plantarum (LP2 group), respectively. The experiment lasted for 42 days. The results showed as follows:1) at 42 days of age, compared with the control group, the percentage of abdominal fat of LP1 and LP2 groups was decreased by 11.40% and 5.03% (P>0.05), and the serum total cholesterol (TC) content was significantly decreased (P<0.01). 2) At 21 days of age, compared with the control group, the liver cholesterol 7α-hydroxylase (CYP7A1) mRNA relative expression level of LP1 and LP2 groups was significantly increased (P<0.01). At 42 days of age, compared with the control group, the mRNA relative expression levels of fatty acid synthase (FAS) and recombinant 3-hydroxy-3-methylglutaryl coenzyme a reductase (HMGCR) in liver of LP1 and LP2 groups were significantly decreased (P<0.01), and the liver sterol regulatory element-binding protein-1c (SREBP-1c) mRNA relative expression level of LP1 group was significantly decreased (P<0.01).3) At 21 days of age, compared with the control group, the serum catalase (CAT) activity and liver superoxide dismutase (SOD) mRNA relative expression level of LP1 and LP2 groups were significantly increased (P<0.01), and the ileal malondialdehyde (MDA) content was significantly decreased (P<0.01); the serum SOD activity of LP1 group was significantly increased (P<0.05), and the serum MDA content was significantly decreased (P<0.05). At 42 days of age, compared with the control group, the liver MDA content of LP1 and LP2 groups was significantly decreased (P<0.01). It is concluded that dietary Lactobacillus plantarum can improve the lipid metabolism of Peking duck by reducing synthesis and enhancing excretion mechanism, meanwhile improve the antioxidant function. The recommended supplemental dose of Lactobacillus plantarum in diet of Pekin ducks is 400 mg/kg.

Cite this article

AN Keying , GAO Wenwen , LI Lei , XIA Zhaofei . Effects of Lactobacillus plantarum on Lipid Metabolism and Antioxidant Function of Pekin Ducks[J]. Chinese Journal of Animal Nutrition, 2022 , 34(12) : 7790 -7800 . DOI: 10.3969/j.issn.1006-267x.2022.12.030

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