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Gewählte Publikation:

Toth, Z; Kaps, M; Sölkner, J; Bodo, I; Curik, I.
(2006): Quantitative genetic aspects of coat color in horses.
J Anim Sci. 2006; 84(10):2623-2628 FullText FullText_BOKU

Abstract:
The aim of this study was to estimate genetic parameters for coat color in horses. Besides defining coat color classes (gray, chestnut, bay, and black), the phenotypes were also measured quantitatively according to standardized international procedures (Commission Internationale de I'Eclairage L*, a*, b*), where L* describes lightness, a* describes color saturation from red to green, and b* describes color saturation from yellow to blue. The total color saturation was derived from a* and b* and referred to as Chroma. A total of 294 horses from the breeds Lipizzan, Nonius, Arabian Pure Bred, Shagya Arabian, and Gidran were measured at neck, shoulder, and belly. Heritabilities (within and between breeds or color classes) and repeatabilities were estimated using REML from univariate animal models defined separately for gray and nongray horses. For gray horses, the estimated within-breed heritabilities for L* ranged from 0.45 to 0.49 and for a*, b*, and Chroma from 0.09 to 0.52, indicating moderate polygenic effect. For nongray horses, between-color class heritabilities were high (0.70 to 0.85) and within-color class heritabilities were negligible (except for L* measured on neck and belly, 0.21 and 0.34, respectively). Additionally, the importance of L* was described by the relation with the total melanin content of horse coat hair; for gray and nongray horses, a strong negative linear relationship was detected (P < 0.01). The spectrometric measures and the results of this study demonstrate a possible approach to the estimation of the polygenic component involved in coat color inheritance.
Autor*innen der BOKU Wien:
Sölkner Johann
BOKU Gendermonitor:

Find related publications in this database (using NML MeSH Indexing)
Animals -
Breeding -
Female -
Genetic Variation -
Hair - chemistry
Horses - genetics
Male - genetics
Melanins - analysis
Models, Genetic - analysis
Pigmentation - genetics
Quantitative Trait, Heritable - genetics

Find related publications in this database (Keywords)
coat color
heritability
horse
melanin
repeatability


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