World's first transgenic cow

In Argentina, announced the birth of the world's first cloned cows with human genes that can produce milk that is similar to the parent.

According to scientists, a cow named Rosita ISA was born on April 6 2011 is by caesarean section because she weighed more than 45 kg - about twice the normal newborn Jersey cow breed.

This transgenic cows able to produce milk containing proteins present in human breast milk. Experts believe that in the future such milk can be used in the production of infant formula. However, the first milk from Rosita have to wait two years. Critics say that this kind of testing can be dangerous, both for the individual as well as for cattle.