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Genetic parameters for egg quality traits in Pekin ducks
Carl A Kroger1, William Lee2, Gregory S Fraley1
1Department of Animal Science, Purdue University, West Lafayette, IN, 47906.
Poultry Science
|September 21, 2024
Summary
Pekin duck egg quality traits are moderately to highly heritable, offering potential for genetic improvement. This study quantifies these traits, providing data for enhancing duck productivity through selective breeding.
Area of Science:
- Animal Genetics
- Poultry Science
- Quantitative Genetics
Background:
- Pekin ducks are a major global protein source, primarily for meat.
- Limited data exists on egg quality heritability in Pekin ducks, impacting industry sustainability.
- Improving hatching egg quality can enhance overall meat duck productivity.
Purpose of the Study:
- To estimate heritability for egg quality traits in Pekin ducks.
- To determine genetic correlations between these traits.
- To provide insights for genetic improvement strategies in the duck industry.
Main Methods:
- Measured egg quality traits in 612 Pekin ducks across multiple ages and two generations.
- Utilized BLUPF90 software and Restricted Maximum Likelihood (REML) for analysis.
- Calculated heritability and genetic correlations using a pedigree of 9,418 individuals.
Main Results:
- Egg quality traits showed moderate to high heritability (0.20-0.71).
- Heritability generally increased with duck age up to 35 weeks.
- Significant genetic correlations were observed, ranging from -0.80 to 0.99.
Conclusions:
- Egg quality traits in Pekin ducks are heritable, supporting genetic selection.
- Multi-trait selection schemes can effectively improve hatching egg quality.
- Findings contribute to sustainable practices in the US duck industry.
