In 2008 a colt with a striking white-spotting coat colour was born out of two solid-coloured bay Franches-Montagnes parents. El color del pelaje era una combinación de manchas blancas y dilución del color del pelaje y se denominó macchiato. A clinical examination revealed that the macchiato stallion was deaf and had a low progressive sperm motility.
The Coat Macchiato (Splashed White) test (P593) tests for a mutation in the MITF gene. Esta prueba detecta dos variantes (alelos). El alelo M es dominante. Una o dos copias del alelo M resultan en el color de la capa de Macchiato. El alelo N es recesivo y no tiene efecto en el color básico.
The Coat Macchiato (Splashed White) test encloses the following results:
Result Macchiato |
Coat Colour |
Descripción |
---|---|---|
N/N |
Non-Macchiato
|
Non-Macchiato. The basic colour is not modified unless modified by other colour modifying genes. It can only pass on allele N to its offspring. |
N/M |
Macchiato |
Macchiato pattern. One copy of the M allele. Horse has Macchiato coat pattern unless modified by other colour modifying genes. It can pass on either allele N or M to its offspring. |
M/M |
Macchiato |
Macchiato pattern. Two copies of the M allele. Horse has Macchiato coat pattern unless modified by other colour modifying genes. It can only pass on allele M to its offspring. |