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Updated: Jun 20, 2026
10:17
An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
Published on: November 3, 2010
Associations between polymorphisms in ELOVL2 and OSBPL8 genes and feed efficiency in meat-type ducks
Lianzhen Lu1, Shuang Gu1, Guiru Qiu2
1College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
Poultry Science
|June 18, 2026
Summary
Genetic variations in the elongation of very-long-chain fatty acid protein 2 (ELOVL2) and oxysterol binding protein-like 8 (OSBPL8) genes are linked to improved feed efficiency (FE) in ducks. These findings provide molecular markers for enhancing duck breeding programs.
Area of Science:
- Animal Genetics
- Poultry Science
- Molecular Biology
Background:
- Feed efficiency (FE) is a critical economic trait in the poultry industry, directly impacting production costs.
- The elongation of very-long-chain fatty acid protein 2 (ELOVL2) and oxysterol binding protein-like 8 (OSBPL8) genes are implicated in lipid metabolism and are potential candidates for influencing FE.
Purpose of the Study:
- To investigate the association between single nucleotide polymorphisms (SNPs) in the OSBPL8 and ELOVL2 genes and FE traits in meat-type ducks.
- To identify specific genetic markers that can be utilized for marker-assisted selection in duck breeding.
Main Methods:
- Genomic DNA was extracted from 505 meat-type ducks.
- Primer design, PCR amplification, and sequencing were performed to identify SNPs in OSBPL8 and ELOVL2.
- Statistical analysis was conducted to associate identified SNPs with FE traits, including feed conversion ratio (FCR), residual feed intake (RFI), and average daily feed intake (ADFI).
Main Results:
- Two SNPs in OSBPL8 (g.40194710T > A and g.40194759A > G) and two SNPs in ELOVL2 (g.95803706 G > A and g.95803927 G > A) were identified.
- Both ELOVL2 SNPs were significantly associated with FCR, RFI (P < 0.01), and ADFI (P < 0.05).
- OSBPL8 SNPs showed associations with FCR, ADFI (P < 0.05), and RFI (P < 0.05). The AAAATAAG genotype combination demonstrated significantly lower FCR and RFI values.
Conclusions:
- Polymorphisms in the OSBPL8 and ELOVL2 genes are significantly associated with key feed efficiency traits in meat-type ducks.
- These identified SNPs serve as valuable molecular markers for selecting ducks with superior feed utilization capabilities.
- The findings contribute to the genetic improvement of feed efficiency in duck populations through marker-assisted selection.
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