Sabino is a general description for a group of similar white spotting patterns. El patrón sabino se describe como manchas irregulares, por lo general en las piernas, el vientre y la cara, a menudo con un marcado alrededor de los bordes de las marcas blancas. Se ha descubierto una mutación que produce un tipo de patrón sabino, se le ha llamado Sabino1 porque no está presente en todos los caballos con patrón sabino. Probablemente existirán más mutaciones que influyan en otros patrones sabinos. La prueba Color de Capa Sabino 1 (P785) analiza el estado genético del gen KIT. Este gen tiene dos variantes (alelos). El alelo SB1 es semi- dominante. Una copia del alelo SB1 da como resultado caballos con marcas Sabino rotas y posiblemente solo una pequeña cantidad de blanco. Dos copias del alelo SB1 dan como resultado al menos un 90% de blanco, también conocido como Sabino-blanco. El alelo N es recesivo y no tiene efecto en el color básico.
The Coat Colour Sabino 1 test encloses the following results, in this scheme the results of the Coat Colour Sabino 1 test are shown in combination with the possible results for the tests that determine the basic Coat Colour (Coat Colour Chestnut and Coat Colour Agouti test):
|
Result Sabino 1 |
Result Chestnut + Agouti |
Coat Colour |
Descripción |
|---|---|---|---|
|
N/N |
e/e + A/A, A/a or a/a
|
Chestnut, Sorrel
|
Not Sabino 1. The basic colour chestnut/sorrel is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring. |
|
N/N |
E/E or E/e + A/A or A/a |
Bay, Brown |
Not Sabino 1. The basic colour bay/brown is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring. |
|
N/N |
E/E or E/e + a/a |
Black |
Not Sabino 1. The basic colour is not black modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring. |
|
N/SB1 |
e/e + A/A, A/a or a/a
|
Chestnut/sorrel sabino |
Sabino 1 pattern. One copy of the SB1 allele. Horse typically may have 2 or more white legs, blaze, spots or roaning in the midsection and jagged margins around white areas unless modified by other colour modifying genes. It can pass on either allele N or SB1 to its offspring. |
|
N/SB1 |
E/E or E/e + A/A or A/a |
Brown/bay sabino |
Sabino 1 pattern. One copy of the SB1 allele. Horse typically may have 2 or more white legs, blaze, spots or roaning in the midsection and jagged margins around white areas unless modified by other colour modifying genes. It can pass on either allele N or SB1 to its offspring. |
|
N/SB1 |
E/E or E/e + a/a |
Black sabino |
Sabino 1 pattern. One copy of the SB1 allele. Horse typically may have 2 or more white legs, blaze, spots or roaning in the midsection and jagged margins around white areas unless modified by other colour modifying genes. It can pass on either allele N or SB1 to its offspring. |
|
SB1/SB1 |
e/e + A/A, A/a or a/a
|
Chestnut/sorrel sabino |
Sabino 1 pattern. Two copies of the SB1 allele. Horse is complete or nearly complete white unless modified by other colour modifying genes. It can only pass on allele SB1 to its offspring. |
|
SB1/SB1 |
E/E or E/e + A/A or A/a |
Brown/bay sabino |
Sabino 1 pattern. Two copies of the SB1 allele. Horse is complete or nearly complete white unless modified by other colour modifying genes. It can only pass on allele SB1 to its offspring. |
|
SB1/SB1 |
E/E or E/e + a/a |
Black sabino |
Sabino 1 pattern. Two copies of the SB1 allele. Horse is complete or nearly complete white unless modified by other colour modifying genes. It can only pass on allele SB1 to its offspring. |