Scientists at Argentine biotech firm Kheiron have achieved a groundbreaking milestone by producing the world's first genetically edited horses using the CRISPR-Cas9 technique. This advancement aims to enhance the speed and performance of polo ponies.

The five foals, born in October and November 2024, are genetically modified versions of the award-winning mare Polo Pureza. By editing the myostatin (MSTN) gene, which regulates muscle development, the researchers intend to boost the horses' sprinting capabilities while preserving the mare's other valuable traits.

Co-founder Gabriel Vichera emphasized that this method complies with Argentine regulations and is not considered genetic doping. The technique allows for precise modifications to the genome, accelerating natural processes to achieve desired attributes.

Kheiron is also exploring genetic modifications in other animals, such as pigs for human organ transplants and cows for improved heat resistance and protein content.

This development positions Argentina at the forefront of equine biotechnology, potentially revolutionizing the breeding and performance of polo horses.