Milk protein is made up of 80% casein proteins and 20% whey proteins. A1 β-casein is the most common type found in cow’s milk, but some cows produce A2 β-casein milk protein.
A2 milk, exclusively containing the A2 protein is priced higher than normal (A1) milk in NZ. About 30% of NZ dairy animals are estimated to contain the A2 gene, and about 70% the A1 gene.
The A2 Corporation in NZ claims that when people experience discomfort drinking ordinary cows’ milk, they may experience relief when they switch to a2 Milk®.*
The A2 gene determines whether A1 or A2 protein is produced in cow’s milk.
How is A2 inherited?
Each animal receives one copy of the gene from its sire and the other from its dam.
Testing for the A2 Gene
Testing for the A2 gene can be done via a tissue or blood sample.
Phone GeneMark on 0800 436 362 for a request form.
See the GeneMark DNA Sampling Equipment page to order the GeneMark Applicator Gun & the Tissue Sampling punches.
All samples submitted must have a submission form to accompany them.
* LIC does not endorse any claims related to A2 milk.