Miniature Dairy Goat Association



MDGA Member UC Davis Testing
Chairs: Carla & Josie Kirby

MDGA is proud to announce we are now providing reduced G6S, DNA parentage & Casein testing fees!

For Questions please contact us at:


Please fill out this form for testing your goat(s).
Testing Application

For Payment, go to our PayPal Page
or send check to :
MDGA Davis Testing
PO Box 1534
Woodland, WA 98674

How the testing works:

Once you submit your MDGA testing request application and forward your payment conformation to us, the committee will request a kit(s) from Davis on your behalf.

The testing committee will then forward that test kit to you via email once they receive it from Davis.

Then follow the instructions in the kit we forward you.


Testing requires 20-30 Hairs With Roots

Hair root from coarse, longer hair often found over:

  • withers

  • chest

  • rump

  • tail

  • back of hind leg

  • poll

  • or fetlock

is the preferred sample type for goats.

Storing Hair Samples
To store the sample, you pull the hair, place in a paper envelope (separate envelope for each goat), and keep at room temperature away from any chance of bugs getting to it.

Samples are good this way for up to 10 years.

Never use plastic to store samples, and do not refrigerate or freeze.


Parentage Testing Procedures - DNA - $35

A DNA profile—which provides allele sizes for all microsatellite markers—is obtained, and parentage analysis is performed. A variety of sample types can be utilized for routine testing, including blood, hair, semen, buccal swabs and FTA cards. Non-routine sample types include bone, teeth, saliva, dried blood, urine and feces. DNA is extracted from the samples, and microsatellite marker analysis begins with the PCR procedure. In this process a computer program compares the DNA profile of the offspring to those of the presumed parents. A parentage analyst reviews the results and sends the final report. If a listed parent or parents are excluded, additional analysis is performed including retesting of samples and the possible use of additional DNA markers to confirm the exclusion.


Alpha S1 Casein Testing - $25

Alpha s1 Casein is one of the four casein proteins found in goat's milk and is the most important of the four for cheese making. The Alpha s1 Casein gene (CSN1S1) that produces the protein shows polymorphisms which affect the amount of protein and fat produced, with higher levels associated with the best cheese making. Research suggests that low levels of Alpha s1 Casein, may be associated with reduced milk sensitivities for some people.


G6-Sulfatase Deficiency(G6S, MPSIIID) - $25

G6-Sulfatase deficiency is an inherited metabolic defect that occurs in Nubian goats and related crosses. A mutation in the G6-S gene renders the enzyme incapable of degrading complex  polysaccharides known as heparin-sulfate glycosaminoglycans (HS-GAGs) which then abnormally accumulate in tissues such as central nervous system and viscera. Clinically, affected goats exhibit delayed motor development, growth retardation, and early death. The disease is inherited in an autosomal recessive fashion. Therefore, both sexes are equally affected and two copies of the defective gene must be present for signs of the disorder to be observed. Breeding two carrier goats, which are normal but each possesses a single copy of the mutation, is predicted to produce 25% affected offspring.



All testing information property of UC Davis Site. See their site for more in-depth info

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