Bay horse
A brown horse is a horse with brown fur and black mane and tail.
Wild-type brown
The black on the legs doesn't go up to the carpal joint and ankle. Often the color is associated with weak zebra stripes on the legs.
Ordinary brown
The legs are black beyond the carpal and hocks, and a black face mask is often added. They often have a very reddish brown.
Black-brown
A black and brown man can be dark brown, but he can also look almost like a black horse. The muzzle, some hair around the eyes, the area in front of the start of the hind leg and the inside of the legs are always noticeably lighter than the rest of the body.
Possible confusion:
- Black : Mane, tail and back can be bleached from the sun, making them look brown. The area around the eyes, the muzzle and the area in front of the hind legs are never lighter than the rest of the fur.
- Smutty : A smutty brown can look a lot like a black brown.
- Cream gene of the horse : Dark earth-colored ones can have such a slight lightening that they cannot be visibly distinguished from horses that have not been lightened.
Time-related color changes
In very young foals, the legs of a bay do not yet have their later black color. | Brauner in summer | The darker winter fur of this animal and the lighter summer fur that has already partially come through are easy to see |
In very young foals, the later black areas of the brown's legs are usually still light, sometimes even almost white.
Browns often have a darker coat in winter than in summer.
Genetics: The Agouti Locus
There are three variants of the color of brown, the wild-type brown, the normal brown and the black-brown, which are ordered from dominant to recessive by different alleles of the agouti locus:
- A + : wild-type brown
- A: Normal brown
- A t : Black-brown
- a: Black
All alleles can be masked by the Fuchs gene .
Races
Brown with its shades is the most common horse color and occurs in almost all breeds. The Cleveland Bay and Maremmano are breeds that are exclusively brown.
See also
Web links
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- CM Woolf, JR Swafford: Evidence for eumelanin and pheomelanin producing genotypes in the Arabian horse. In: J Hered. 79 (2), 1988 Mar-Apr, pp. 100-106. PMID 3403956
- Susan Elrod, William D. Stansfield: Schaum's Outline of Genetics. 4th edition. Mcgraw-Hill Professional, 2001, ISBN 0-07-136206-1 .
- Anne Phaff Ussing: The genetics of icelandics horse color. http://wayback.vefsafn.is/wayback/20070507000000/edda.is/skrar/pdf/Litir_isl_hestsins_ANNE_PHAFF_USSING.pdf
- S. Rieder, S. Taourit, D. Mariat, B. Langlois, G. Guerin: Mutations in the agouti (ASIP), the extension (MC1R), and the brown (TYRP1) loci and their association to coat color phenotypes in horses (Equus caballus). In: Mamm Genome. 12 (6), 2001 Jun, pp. 450-455. PMID 11353392
- J. Henner, PA Poncet, L. Aebi, C. Hagger, G. Stranzinger, S. Rieder: Horse breeding: genetic tests for the coat colors chestnut, bay and black. Results from a preliminary study in the Swiss Freiberger horse breed. In: Switzerland Arch Tierheilkd. 144 (8), 2002 Aug, pp. 405-412. PMID 12224446
- lexiqueducheval.net
- HJ Wagner, M Reissmann: New polymorphism detected in the horse MC1R gene. In: Animal Genetics. 31 (4), 2000, pp. 289-290. doi: 10.1046 / j.1365-2052.2000.00655.x
- Glynis Scott: Horse color genetics. http://www.horse-genetics.com/horse-color-genetics.html