Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2440110 | Journal of Dairy Science | 2009 | 6 Pages |
Abstract
New platforms utilizing single nucleotide polymorphisms (SNP) offer operational advantages over the conventional microsatellite-based ones, making them a promising alternative for parentage exclusion. Through simulation and empirical data, a 40-SNP panel (where the minor allele frequency was 0.35 on average) was shown to be a comparable or better diagnostic tool than the current 14-microsatellite panel that is used to parentage test New Zealand dairy animals. The 40 SNP alone did not have sufficient power of exclusion to match more than 75% of the progeny to the correct sire and dam. Utilizing mating records and grouping progeny and dams by birth and calving dates, respectively, decreased the number of sire-dam combinations that each progeny was tested against and dramatically increased the utility of the SNP. These results highlight the importance of combining genotypes with on-farm data to maximize the ability to assign parentage in the New Zealand dairy herd.
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Authors
P.J. Fisher, B. Malthus, M.C. Walker, G. Corbett, R.J. Spelman,