French Dairy Mating

Modern Farmer posts on a French site on mating dairy cows and bulls:

"A consortium of French breeding associations launched the site in October after a farming summit. Breeders write up their cows’ online profiles, recording age and race (eye color is assumed to be brown), followed by their ideal traits in a mate. Milking prowess in its female progeny, perhaps? Muscular fitness? Or perhaps an unfettered ability to knock up his mate on the first go-around?"

 I'm curious, since my impression is that in America the data on the bulls and their progeny are posted/public, not the data on the dams.  Not sure if that's a true difference, and if it is, why it might exist.  Certainly the universe of bulls is much smaller than the universe of cows, which might be one factor.