Skimmel (hest)

For alternative betydninger, se Skimmel. (Se også artikler, som begynder med Skimmel)

En Skimmel er betegnelsen for en hest, der får flere og flere grå (hår) og til sidst hvidt hårlag. En skimmel har sort hud og er sort omkring de naturlige åbninger (fx øjne) og hove. De gener, der styrer de-pigmentering, influerer ikke på farven på hestens hud og øjne.^[1] Når hesten er voksen, er dens pels hvid eller hvid blandet med hår af andre farver som blå, brun og rød. Skimler kan ved fødslen have flere forskellige farver afhængig af hvilke gener den har. Har hesten anlægget for skimmel, får den fra fødslen eller kort derefter tiltagende hvid pels. Effekten kan foregå med forskellig hastighed.

Typisk bliver hårene på hovedet hurtigst grå/hvide, hvorimod benene senest bliver grå/hvid.

^ Locke, MM; MCT Penedo; SJ Brickker; LV Millon; JD Murray (2002). "Linkage of the grey coat colour locus to microsatellites on horse chromosome 25". Animal Genetics. 33 (5): 329-337. doi:10.1046/j.1365-2052.2002.00885.x. PMID 12354140. The progressive loss of colour in the hair of grey horses is controlled by a dominantly inherited allele at the Grey locus (G^G). Foals are born any colour depending on the alleles present at other colour determining loci. The progressive loss of colour in the hair of grey horses is controlled by a dominantly inherited allele at the Grey locus (GG). Foals are born any colour depending on the alleles present at other colour determining loci. After birth, horses carrying the GG allele begin to show white hairs that are intermixed with their original hair colour. Although the rate at which horses will turn grey is variable, the amount of white hair increases with age until the coat is completely white at maturity. Pigmentation of the skin and eyes is not affected by GG. Dark skin distinguishes the grey phenotype from that of pink-skinned cremello and white horses.

[locke2002-1] Locke, MM; MCT Penedo; SJ Brickker; LV Millon; JD Murray (2002). "Linkage of the grey coat colour locus to microsatellites on horse chromosome 25". Animal Genetics. 33 (5): 329-337. doi:10.1046/j.1365-2052.2002.00885.x. PMID 12354140. The progressive loss of colour in the hair of grey horses is controlled by a dominantly inherited allele at the Grey locus (G^G). Foals are born any colour depending on the alleles present at other colour determining loci. The progressive loss of colour in the hair of grey horses is controlled by a dominantly inherited allele at the Grey locus (GG). Foals are born any colour depending on the alleles present at other colour determining loci. After birth, horses carrying the GG allele begin to show white hairs that are intermixed with their original hair colour. Although the rate at which horses will turn grey is variable, the amount of white hair increases with age until the coat is completely white at maturity. Pigmentation of the skin and eyes is not affected by GG. Dark skin distinguishes the grey phenotype from that of pink-skinned cremello and white horses.

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