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Oct
Almost all of their Jersey cows produce A2 milk proteins 85 of the milk is A2 protein which studies are now finding to be more easily digestible than standard milk meaning even those who have been called milkdairy intolerant can enjoy the great taste of grass fed jersey milk. Not only do they produce some of the healthiest A2 milk.
Only a genetic test can tell the cows breeding.
Is jersey cow milk a2. All milk from Holland Jersey is A2 milk. Here comes the science bit. Milk from a cow contains two proteins.
There are three different types of casein. Alpha kappa and beta. Beta-casein has two varieties.
As a cow you either have one the other or both. The A2-A2 gene is found predominantly in heritage cow breeds such as Jersey Guernsey Brown Swiss and Normande. But even among these breeds the A1 gene is still found.
Holstein cows can carry the A2-A2 gene but its not as common. A2 beta-caseinMilk that is high in A2 beta-casein is mainly found in breeds that originated in the Channel Islands and Southern France. This includes breeds like the Guernsey Jersey Charolais and Limousin.
Regular milk contains both A1 and A2 beta-casein but A2 milk contains only A2 beta-casein. Milk from Jersey cows Guernsey cows camels sheep buffalo yaks donkeys goats and Asian cows naturally contain mostly these A2 beta casein proteins whereas milk from cows such as Holsteins usually contains mostly the protein variant called A1 beta casein. Friesian cows produce mostly A1 milk Jerseys and Guernseys produce mainly A2 milk.
In the book Devil in the Milk Professor Keith Woodford explains the. About 65 percent of Jersey cows exclusively produce A2 milk shan213 Flickr The A1 milk hypothesis was devised in 1993 by Bob Elliott a professor of child health research at the University of. A1 beta-casein can be found on all commercially-prepared milk.
A2 beta-casein is protein found in milk produced by old-fashioned cows like the Jersey Charolais Guernsey and Limousin. Milk produced by other mammals such as those from human goat and sheep is similar to A2 dairy milk mainly due to the presence of proline 67. A2 cows milk still contains the A2 beta-casein protein and whey protein.
If someone with a dairy allergy were to ingest either of these proteins their body will elicit an immune response causing an allergic reaction and making A2 milk an unacceptable and dangerous alternative. Genetic variants of beta-casein a protein of cows milk can be classified into two groups A1 and A2 based on the specific amino acid in position 67 of the protein. This A1A2 group designation may be of interest to breeders developing herds for human health benefits.
Jersey milking cows are a treasure trove. Not only do they produce some of the healthiest A2 milk. There are three possible outcomes in this case.
A cow with the A1A1 genotype will give A1 milk a cow with the A2A2 genotype will give A2 milk and a cow with the A1A2 genotype will give milk that has equal amounts of the A1 and A2 beta casein proteins. Purebred Asian and African cows have only the A2 allele and give pure A2 milk. Human Milk is 100 A2 yet another reason to breastfeed and so are buffalos and goats milk.
So if you can find a Desi Cows milk near you great. The most common variants among Western cattle are A1 A2 and B. In general milks from Guernsey Jersey Asian herds human milk and others sheep goat donkeys yaks camel buffalo sheep etc contain mostly A2 beta casein.
Milks from Holstein Friesian contain mostly A1 beta casein. Almost all of their Jersey cows produce A2 milk proteins 85 of the milk is A2 protein which studies are now finding to be more easily digestible than standard milk meaning even those who have been called milkdairy intolerant can enjoy the great taste of grass fed jersey milk. While it would be convenient to attach A2 milk to certain breeds of cattle the truth is even the Jersey cow commonly linked with A2 milk is often A1.
Only a genetic test can tell the cows breeding. And some sources say there are currently fewer than 2000 pure A2A2 cows in the US. The health effects of milk may depend on the breed of cow it came from.
Currently A2 milk is marketed as a healthier choice than regular A1 milk. 11 of 14 Jersey bulls on the All Breeds list are A2A2 as are 21 of 30 bulls on the Jersey list. Fonterras announcement that they have entered into a global strategic.