NPY Gene Marker for Duck Feed Efficiency Selection
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Solution Overview
Problem
Current breeding methods for white feather ducks lack efficient tools for identifying traits related to feed utilization, leading to slow progress in phenotypic breeding and a need for early selection of genotypes with high feed efficiency.
Innovation Solution
A molecular marker based on the neuropeptide gene NPY is developed, allowing for the identification of duck feed utilization efficiency through SNP loci, using PCR-SSCP method and specific primers, enabling early genotyping and selection of ducks with high or fair feed conversion traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional phenotypic breeding methods are used for white feather ducks, then breeding can proceed without molecular tools, but the progress in identifying feed utilization traits is slow and early selection cannot be achieved
Solution Approach 1:
The patent applies preliminary action by developing and establishing SNP molecular markers (specifically the T/C polymorphism at position 577 of the NPY gene) before breeding operations. This allows feed efficiency traits to be identified and selected at the molecular level in early stages, rather than waiting for phenotypic expression later. The marker-assisted selection system enables breeders to make informed decisions about which ducks to propagate based on their genetic potential for feed utilization, significantly accelerating breeding progress and eliminating the time loss associated with conventional slow phenotypic evaluation methods.
2Measurement precision
If molecular marker analysis is implemented for feed efficiency traits, then early selection of genotypes becomes possible, but the complexity of detection methods increases
Solution Approach 1:
The patent applies the extraction principle by isolating and focusing on a specific, simple molecular marker (the T/C SNP at position 577 of the NPY gene) that is directly associated with feed efficiency traits. Rather than implementing complex whole-genome analysis or multiple marker systems, the invention extracts the critical genetic variation from the NPY gene that correlates with feed conversion ratio. This targeted approach achieves high measurement precision in identifying feed-efficient genotypes while maintaining simple, cost-effective detection methodology using standard PCR and sequencing techniques, thus avoiding unnecessary device complexity.
3Measurement precision
If SNP loci screening is performed on the NPY gene to identify feed efficiency traits, then accurate genotyping can be achieved, but the cost and time of analysis increase
Solution Approach 1:
The patent applies the principle of using simple, inexpensive, and rapid detection methods rather than complex, expensive, and time-consuming molecular analysis systems. The invention utilizes standard PCR amplification followed by Sanger sequencing to genotype the T/C polymorphism at position 577 of the NPY gene. These are conventional, widely-available techniques that provide accurate genotyping results without requiring specialized equipment or expensive reagents. The method enables high-throughput genotyping of multiple ducks efficiently, achieving both accurate measurement precision and rapid analysis, thereby minimizing time loss while maintaining cost-effectiveness in breeding programs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method provides a simple, rapid, and cost-effective means to detect NPY gene mutations, enabling early selection of ducks with high or fair feed efficiency traits, improving breeding efficiency and reducing the need for specialized instruments.
Implementation Method 1
The SNP loci of Q1 line ducks were screened by using the NPY gene as a candidate gene
Implementation Method 2
PCR-SSCP method
Data Source
AI summary
The present disclosure provides a molecular marker for identifying traits of efficiency of duck feed utilization based on a neuropeptide gene NPY, a method and use thereof. The NPY gene has a nucleotide sequence shown in SEQ ID NO: 1, the molecular marker is T or C, and the molecular marker is located at position 577 of the nucleotide sequence. In the present disclosure, mutation of the NPY gene is detected using a polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) method, the traits of efficiency of duck feed utilization are selected based on genotypes, and a breeding method for early selection of efficiency of poultry feed utilization is established. The method is simple, rapid, and low-cost, does not need special instrument, and satisfies experimental needs.