But if the number of individuals is very large, the individuals will overlap each other.
Professor Brian Kinghorn in the University of New England developed the software pedigree viewer, which can trim and prune the pedigree, and visually display the individuals’ pedigrees in a window. It is very powerful, but it needs be configured by a parameter file. It can display a pedigree included many individuals. In the Windows platform, Professor Yang Da’s team from the University of Minnesota developed a software pedigraph that can be used to display individual pedigrees. Therefore, it is very important to visualize the pedigree of individuals. In addition, a pedigree is usually saved in the form of three columns: individual, sire, and dam, which makes it difficult to visually view individual ancestor and offspring individuals. Therefore, the reliable and accurate pedigree records are very important for a selective breeding program. On the other hand, the use of pedigree information can also control inbreeding and avoid depression of traits. On the one hand, the accuracy of estimated breeding value can be improved by pedigree information. Pedigree plays an important role in the animal selective breeding program.
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