Since when is "superstud" a scientific term?

I'm just going to quote and link to this article because, though I knew the Brits loved their inbreeding I had no idea it went this deep:

Virtually all 500,000 of the world's thoroughbred racehorses are descended from 28 ancestors, born in the 18 ^th and 19^th centuries, according to a new genetic study. And up to 95% of male thoroughbreds can be traced back to just one stallion.