Genetic Selection for Equine Health and Performance
- Topics: Article, Fetal Sexing, Genetics
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Most owners and breeders wouldn’t gaze at a pasture filled with weanlings and picture those same horses 25-30 years later, with sway backs or graying coats. With increasing attention being paid to geriatric horses’ care, however, it behooves us to look at horses’ longevity from a different angle–at the beginning rather than at the end.
The Tale of the Telomere
Made from repeating sequences of DNA located at the end of the arm of a chromosome, the telomere is thought of as a protective end cap, preventing chromosomes from degrading or sticking together during cell division. The telomere bears the brunt of chromosomal damage, shortening each time a cell divides.
The lowly telomere has made recent headlines in human health as a suspected link to longevity. In humans, shorter telomere length has been linked to shorter lifespan
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Christy Corp-Minamiji, DVM
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