Charolais Dilution

Quick Summary

The pale cream/white coat color of Charolais cattle is produced by a mutation that has a dosage-dependent effect on pigments, with a single allele diluting black to gray and red to pale red, and a double dose producing the breed's typical white coat.

Charolais Cow
Charolais cow exhibiting the breed's characteristically pale coat

Phenotype: The pale cream/white coat color of Charolais cattle is produced by a mutation that has a dosage-dependent effect on pigments, with a single allele diluting black to gray and red to pale red, and a double dose producing the breed's typical white coat.

Mode of Inheritance: Incomplete dominance

Alleles: N = No Charolais Dilution, Dc = Charolais Dilution

Breeds appropriate for testing: Charolais, Charolais crosses, composite breeds with Charolais content

Explanation of Results:

  • Cattle with N/N genotype do not exhibit diluted pigmentation in their coats. They cannot transmit this Charolais dilution variant to their offspring.
  • Cattle with Dc/N genotype exhibit diluted pigmentation in their coats; coat color is gray or pale red. They will transmit this Charolais dilution variant to 50% of their offspring. Matings between two Dc/N genotype cattle have a 25% chance of producing a calf with a white coat.
  • Cattle with Dc/Dc genotype exhibit diluted pigmentation in their coats; coat color is white. They will transmit this Charolais dilution variant to all of their offspring.
Price

$25 one test per animal

Additional Details

The white coat color of the Charolais breed is produced by a mutation in the SILV gene. The effect is dosage related: one copy of the mutation dilutes red pigment to pale red and black pigment to gray while two copies produce the typical white phenotype of the Charolais breed.

 

Note: This test specifically detects the mutation in the SILV gene known to cause the white phenotype of the Charolais breed. Several genes are involved in the production of cattle color and pattern. The results above may not completely describe the color of the animal tested.
Turnaround Time
2-6 business days
Type of Sample

Species

Type of Test

Results Reported As
Test Result Charolais Dilution
N/N No copies of Charolais dilution.
Dc/N One copy of Charolais dilution. Coat color is gray or pale-red.
Dc/Dc Two copies of Charolais dilution. Coat color is white.
References

Gutiérrez-Gil, B., Wiener, P., & Williams, J.L. (2007). Genetic effects on coat colour in cattle: dilution of eumelanin and phaeomelanin pigments in an F2-Backcross Charolais × Holstein population. BMC Genetics, 8:56. doi: 10.1186/1471-2156-8-56.