With the single purpose breeding on one sex only, the unselected sex like in these cases male, are not a major concern when AI is so important with production herds and broodcocks for layers are only in the hatchery where confinement issues are not as problematic as with hens in a production setting for such long periods of time. If my knowledge is correct the brood "cocks" do not live for even a year so pressure is on mating frequency and fertility during that short period of time. My American Dominiques and even horniest games would come across as dead heads in those commercial settings when it comes to fertilizing eggs.
