China Animal Husbandry and Veterinary Medicine ›› 2024, Vol. 51 ›› Issue (6): 2253-2260.doi: 10.16431/j.cnki.1671-7236.2024.06.001

• Biotechnology • Previous Articles    

Identification and Analysis of Lipid Profile in DHAV-3 Resistant and Susceptible Lines of Pekin Duck

CHANG Zhuo1, LIANG Suyun2, WANG Shuaiqin2, YANG Yuze1, XUE Zhenhua1, ZHAO Chunying1, LIN Xiaoran1, LU Yongqiang1, HOU Shuisheng2   

  1. 1. Beijing General Station of Animal Husbandry, Beijing 100101, China;
    2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2023-12-21 Published:2024-06-01

Abstract: 【Objective】 The purpose of this experiment was to study the lipid metabolism profiles of the resistant Pekin duck line (Z7-R) and susceptible line (Z7-S) of Pekin ducks to Duck hepatitis A virus genotype 3 (DHAV-3),and investigate lipid markers with significant differences between this two lines.【Method】 6 2-day-old Z7-R and 6 2-day-old Z7-S Pekin ducks were selected and their blood and liver tissues were collected for blood biochemical index determination and non-targeted liver lipidomics detection based on liquid chromatography-mass spectrometry (LC-MS).t-test,partial least squares-discriminant analysis (PLS-DA) and fold change (FC) were used to comprehensively screen the significantly different lipids between the two lines.【Result】 The contents of total cholesterol,low density lipoprotein and phospholipid in the plasma of Z7-R Pekin duck were significantly higher than those in Z7-S (P<0.05).A total of 1 532 lipid metabolites were identified by lipidome analysis,covering five major categories:Fatty acyl (FA),glycerolipids (GL),glycerophospholipids (GP),sphingolipids (SP),and sterol lipids (ST).A total of 84 significantly different lipids were identified.Triglyceride (TG) was the main component in glycerolipids,and the content of TG in Z7-R Pekin duck was significantly higher than that in Z7-S (P<0.05).Lysophosphatidylcholine (LPC),lysophosphatidylethanolamine (LPE) and free fatty acid (FFAs) were the significantly different glycerophospholipids,and the contents of these lipids in Z7-R Pekin duck were significantly lower than those in Z7-S (P<0.05).A total of 10 significantly different lipids were screened and they were significantly enriched in sphingolipid metabolism,glycerophospholipid metabolism,glyceride metabolism,linoleic acid metabolism and α-linolenic acid metabolism.【Conclusion】 Lipidomics technology could be used to differentiate Z7-R lines from Z7-S lines of Beijing ducks.The 10 significantly different lipids could be used as potential biomarkers related to DHAV-3 resistant and susceptible traits.

Key words: Pekin duck; DHAV-3; lipidomics; metabolism

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