BC is the second most abundant protein in cow’s milk representing 27% of total protein. If one amino acid is change then A1is broken down and create BCM-7 (beta Casomorphine) which belong to opiate family which have harmful effect when inject into blood of animal’s body. There is an ongoing debate about the nutritional value of both A1 and A2 milk. But from some research work it proof thatA2milk have more nutritional value than A1. A1cause lactose intolerance and other health issue due to their BCM-7 property.
Due to consumption of A1milk, Type 1 Dibeties mellietus, Coronory heart disease, Autistic spectral disorder (ASD), Sudden infant death syndrome , autism means is disabilities including problems with social interaction, communication and repetitive behaviors.In Australia, United states and Northern Europe cattle breeds like Holstein Friesian, Ayrshire and British Shorthorn produce A1beta casein milk whereas A2 beta-casein is protein found in milk produced by cows like the Jersey, Charolais, Guernsey and Limousin.Due to harmful effect of A1milk, people prefer A2milk.
A2milk is easy to absorb and digest. A2milk can obtained from indigenous cow which give less milk as compare to exotic cow. In Market, A few of the A2milk brands are Amul Deshi, Desigo, Haritas, GoShrushti which are expensive than A1milk.
How to produce milk containing BC A2 from BC A1 (BC A2 milk) :
Due to the benefits of A2 milk, various researches were done for producing Milk containing BC A2 free from BC A1 by using genetically selected CSN2 A2A2 Jersey cows (BC A2 milk). Furthermore, scientists try to develop an IF suitable for healthy full-term infants during the first six months of life based on BC A2 milk. Breeding for A2A2 cows is based on using semen for bulls that have been tested as being A2A2. The breeding process can be speeded up by selective culling of A1A1 and A1A2 cows and by selective retention of A2A2 calves.