S1E645 - E645 24 Cows Built Half the Holstein Breed. The Other Half Came from One Ontario Barn.
Published: September 6, 2026
Duration: 46:46
Elmer Dawdy and Doug Dunton built 99.84% of modern Holstein sire lines from 24 crooked cows and one Ontario barn. In 1947, a bull calf left a Wisconsin prison herd bound for Kansas on a cashless trade, while an unyielding dairyman in Brampton, Ontario, swore by an iron-clad cull rule and refused to outcross. Neither man ever met the other, yet their separate, uncompromising convictions divided the global Holstein population straight down the middle. This is the untold collision of grit, linebreeding, and living consequences behind every straw of semen in your tank tonight.
Key Moments
The cashless trade...