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Testing can help determine coat color.

Coat Color
  • Most dairy producers working with Holstein cattle know that the breed comes in two color patterns—black and white or red and white.
  • While it is simple to visually determine the phenotype of the cow, the genetics behind Holstein coat color are complex with many possible genotypes determining the animal’s appearance.
  • There are two different locations within the Holstein genome that influence coat color. One location affects Recessive Red coat color and the black/red color form, while the other location affects a Dominant Red color.
  • Recessive Red, the most common form of red coat color in Holstein cattle is located in a different part of the genome than Dominant Red—they are different conditions that both affect the coat color trait. Genetic tests are available for both locations.

Test for coat color when you order CLARIFIDE®
  • Results include genotype information for Recessive Red and Dominant Red information, and utilize haplotype information for black/red.
  • Producers who desire to increase the number of red animals in their herd can use results to identify those animals that may be carriers.
  • Once identified, those animals can be part of mating programs to proliferate the appropriate genes for red coat color.

Resource Center

Click here to view more materials available in the Zoetis Genetics resource center.


Please follow these instructions and guidelines to place your order with us.


New to Zoetis Genetics? Please give us a call at 877-233-3362 so we can walk you through available options.


Please contact our customer service team at 877-233-3362 or to verify our laboratories are approved to conduct DNA tests within your respective country.


Download the Microsoft Excel® Dairy Order Form to place your order through Zoetis.

Enrolled in Enlight™?

If you are a Holstein producer, you may place your order online at

Click here for more information on the CDCB fee structure for genomic testing of U.S. females.


Order DNA Collectors

Holstein producers using Enlight can order test collectors within Enlight at

Watch sample collection videos

Collecting a high-quality sample is the first step to receiving accurate genomic results. Find out more here.


Find answers to common questions about the Zoetis Genetics ordering process here. If you’re still having trouble, please contact us at 877-233-3362 and we’ll be glad to help.


Mail your order and testing kit samples to:

Zoetis Genetics
333 Portage Street, Building 300
Kalamazoo, MI 49007-9970

Please email completed form to:

Click here for a calendar of sample submission and customer reporting timelines.



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