The ram named 'Os' and his off-spring, bred by Piet Coetzee, changed the world's Van Rooy sheep. Os's off-spring like 'White House' (2008 World Grand Champion ram), 'White Wash' (2008 Reserve World Grand Champion ram) and 'White Gold' among others achieved world record prices on auctions (White House N$48 000.00, White Wash N$33 000.00, White Gold N$70 000.00).
