The Cow milk, which is used to feed babies when it is not possible to do so through breastfeeding, can cause allergy to 3% of children during their first years of life. Therefore, the dairy industry seeks to reduce the allergens of this type of milk with various procedures. Now, a new investigation could solve the problem, since they have managed to create a genetically modified cow with the objective that the animal produces milk with a low content of beta-lactoglobulin (BLG), protein responsible for allergies in children.

They create a cow by modifying their genes to produce milk with a low content of a protein responsible for allergies in children

The cow, which is called 'Daisy', is the result of the work of a team of researchers from the 'AgResearch Institute' in New Zealand, which managed to reduce the activity of hundreds of genes of the animal without eliminating them completely, a technique that could be used to control other livestock characteristics.

Another advantage offered by this cow's milk is that it is rich in caseins - a protein that contains cow's milk - which makes it more nutritious than the milk obtained from common cows.

Milk from 'Daisy' is currently being analyzed to confirm its hypoallergenic properties, and later it will have to pass the habitual controls of nutritional security before being able to be commercialized for the human consumption.

Bruce Whitelaw, a professor of biotechnology at the University of Edinburgh, believes that the procedure to genetically modify farm animals could also be used to improve their defense against infections.

However, the research and its results also have detractors, and the New Zealand ecologists affirm that the experiments carried out to create Daisy constitute an act of cruelty against animals and that, in addition, in the new milk a necessary protein has been eliminated for the development of the cow and humans.

Can Food Allergies Be Reversed? (November 2019).