Russian tech startup Neiry has become the first in the world to insert neuro-implants into cow brains to increase milk yield when all other methods are exhausted.

Neiry announced its intention to begin testing its neuro-implants on live cows back in April. Last month, its specialists performed surgeries on five cows to fit them with a stimulator attached to the back of the head and electrodes that penetrate deep into the brain. With the help of these devices, they hope to reach areas responsible for appetite, stress, and reproductive function, and stimulate them through electric impulses. The first tests were performed in Russia’s Sverdlovsk region, and so far, the results are very encouraging.