'Accredited' herds (usually Herefords for some reason), have their health and condition very strictly monitored which enables their milk to be marketed without pasteurisation. There aren't many in the UK now but we're lucky to be near one of them.
Damned hard work sometimes preacher, and for little reward! That's why we've diversified with a riding school, and host game-shooting parties in season. Still, it has its compensations. No fish pond, but there's trout in the stream below Lower Field.