Long Haplotype Method for Detection of Maternal Grandsire and Sire of Maternal Granddam

Abstract Text: The availability of dense SNP genotypes on many animals enables the verification and detection of ancestors. Due to their large impact male ancestors are more often genotyped than female ancestors. It is possible to verify registered pedigree information for a few generations or even to detect candidate ancestors, when registered ancestors appear to be wrong. A method based on counting long haplotype segments in common between male ancestors and the animal of interest has been developed. This method enables the verification of registered maternal grandsires and sires of maternal granddams. In case of doubt a screening amongst available genotyped males can be done to detect the most likely candidate maternal grandsires or sires of maternal granddams. Pedigree, sampling and lab errors can often be corrected and data entering in and resulting from genetic and genomic evaluations is more accurate.

Keywords:

haplotype

grandsire detection

greatgrandsire detection