Today, many traditional breeds of cattle, including those found in Africa and Asia, produce A2 milk; other heritage breeds ...

Most dairy cows today produce milk that contains a protein known as A1 beta-casein. However, certain breeds, such as the indigenous Gir, Sahiwal, and others, produce milk containing A2 beta-casein.

A2 is a licensor and marketer of fresh milk, infant formula, and other dairy products that lack the A1 beta-casein protein. Dairy cows naturally produce two beta-casein proteins in their milk ...