Developing a data validation tool based on Mendelian sampling deviations

A more comprehensive validation procedure for international genetic evaluation data is likely to be welcome in a scenario of growing exchange of livestock and semen. Mendelian sampling (MS) deviations are used in this paper to build a tool for validation of national genetic proofs before submission to the Interbull system. The regression analysis of the mean of MS terms proved to be more sensitive to small biases than the current validation methodology: it detected a bias that in the current situation would have a major influence on the international rankings (295% more Italian bulls for protein yield).