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Updated: Jul 10, 2026

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Published on: July 27, 2021
WOMBAT: a tool for mixed model analyses in quantitative genetics by restricted maximum likelihood (REML).
1Animal Genetics and Breeding Unit, University of New England, Armidale, NSW, Australia. kmeyer@didgeridoo.une.edu.au
WOMBAT is a free software package for quantitative genetic analyses. It performs complex linear mixed model analyses for continuous traits, offering efficient computation for large datasets.
Area of Science:
- Quantitative genetics
- Statistical genetics
- Animal breeding
Background:
- Quantitative genetic analyses are crucial for understanding trait variation.
- Accurate estimation of genetic parameters requires robust statistical models.
- Software limitations can hinder large-scale genetic analyses.
Purpose of the Study:
- To introduce WOMBAT, a new software package for quantitative genetic analyses.
- To provide a flexible and efficient tool for fitting linear mixed models.
- To facilitate the estimation of genetic parameters from complex datasets.
Main Methods:
- Utilizes restricted maximum likelihood (REML) for covariance component estimation.
- Accommodates a wide range of linear mixed models, including multiple traits and effects.
- Employs advanced numerical and computational methods for efficient processing.
Main Results:
- WOMBAT provides accurate estimates of genetic parameters.
- The software is suitable for large-scale quantitative genetic analyses.
- Demonstrates efficient computation for complex models, including bivariate analyses.
Conclusions:
- WOMBAT is a powerful, free, and versatile software package for quantitative genetics.
- Its efficiency and flexibility make it suitable for diverse genetic analyses.
- Available for LINUX and WINDOWS, promoting wider accessibility in research.
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