The farmer in the article does it that way. Cows produce the most milk right after birth. Then they reduce the production, because the calve starts eating on it

The farmer in the article does it that way. Cows produce the most milk right after birth. Then they reduce the production, because the calve starts eating on its own. I think keeping the calves with the mothers is the smallest part of the problem. The premature slaughter of cows and the slaughter of male calves and "surplus" female calves is the bigger issue for me.