There have been some questions on A1 and A2 milk. Trying to clarify based on the information we have access to.

What is A1 and A2 Milk?

Cow milk contains (approximate quantities) three main components. 87% water and 13% solids. Out of 13% solids, 4.5% is fat and 8.5% snf/proteins.

Out of 8.5% proteins, casein is the largest group of proteins in milk, making up about 80% of the total protein content.

There are several types of casein in milk, and beta-casein is the second most common. Beta-casein exists in at least 13 different forms

The two most common forms of beta-casein are:

- A1 beta-casein

- A2 beta-casein

Regular milk contains both A1 and A2 beta-casein, but A2 milk contains only A2 beta-casein.

A2 Milk, only certain breeds produce this?

No, there is no evidence to show that only certain breeds can produce A2 Milk. Regular milk contains both A1 and A2 beta-casein. It has been noticed with studies that certain regions (based on climate) do influence production of A2 only milk, for example (based on European Studies), Milk that is high in A2 beta-casein is mainly found in breeds that originated in the Channel Islands and Southern France. This includes cow breeds like the Guernsey, Jersey, Charolais and Limousin

A2 Only Milk producing cows?

To segregate the cows with A2 only milk production, cows need to be tested for their genes to check if proline gene sequence at position 67 is replaced by histidine, and further breeding of the cows needs to be controlled with mating with only the A2 bulls.

Above is not done in India. A2 Corporation in New Zealand is doing this with Jersey and Holstein cows.

Do cows with humps produce A2 only Milk?

Hump in a cow is an indication of the climate the cows exists and enabling them to have a better breathing space in tropical and subtropical climates. For example cows in Africa, India, Pakistan, Parts of North America, Parts of South America, and Parts of Australia do have cows with humps.

As indicated earlier, regular milk contains both A1 and A2 beta-casein, there is no evidence to show that only cows with humps can only produce A2 Milk.

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