Article
Reconstitution and modernization of lost Holstein male lineages using samples from a gene bank.
Journal of dairy science - 1 May 2020
Dechow C D, Liu W S, Specht L W, Blackburn H
Abstract excerpt
More than 99% of all known Holstein artificial insemination (AI) bulls in the United States can be traced through their male lineage to just 2 bulls born in the 1950s, and all Holstein bulls can be traced back to 2 bulls born in the late 1800s. As the Y chromosome is passed exclusively from sire to son, this suggests that variation is limited for much of the Y chromosome. Two additional male lineages that are...
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